In the Linux kernel, the following vulnerability has been resolved: f2fs: explicitly null-terminate the xattr list When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile assumption that the unused xattr space is always zeroed.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6926-3 advisory.

     discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not     properly handle certain memory allocation failure conditions, leading to a null pointer dereference     vulnerability. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2023-46343)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when     modifying certain settings values through debugfs. A privileged local attacker could use this to cause a     denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)

    Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did     not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this     to cause a denial of service (system crash). (CVE-2024-25739)

    Supraja Sridhara, Benedict Schlter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the     Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit     emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service     (guest crash) or possibly execute arbitrary code. (CVE-2024-25744)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - MTD block device drivers;

    - Network drivers;

    - TTY drivers;

    - USB subsystem;

    - File systems infrastructure;

    - F2FS file system;

    - SMB network file system;

    - BPF subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - Netfilter;

    - Unix domain sockets;

    - AppArmor security module; (CVE-2023-52435, CVE-2024-27013, CVE-2024-35984, CVE-2023-52620,     CVE-2024-35997, CVE-2023-52436, CVE-2024-26884, CVE-2024-26901, CVE-2023-52469, CVE-2024-35978,     CVE-2024-26886, CVE-2024-35982, CVE-2024-36902, CVE-2024-26857, CVE-2024-26923, CVE-2023-52443,     CVE-2024-27020, CVE-2024-36016, CVE-2024-26840, CVE-2024-26934, CVE-2023-52449, CVE-2024-26882,     CVE-2023-52444, CVE-2023-52752)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6926-2 advisory.

     discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not     properly handle certain memory allocation failure conditions, leading to a null pointer dereference     vulnerability. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2023-46343)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when     modifying certain settings values through debugfs. A privileged local attacker could use this to cause a     denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)

    Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did     not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this     to cause a denial of service (system crash). (CVE-2024-25739)

    Supraja Sridhara, Benedict Schlter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the     Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit     emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service     (guest crash) or possibly execute arbitrary code. (CVE-2024-25744)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - MTD block device drivers;

    - Network drivers;

    - TTY drivers;

    - USB subsystem;

    - File systems infrastructure;

    - F2FS file system;

    - SMB network file system;

    - BPF subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - Netfilter;

    - Unix domain sockets;

    - AppArmor security module; (CVE-2024-26884, CVE-2024-26882, CVE-2024-26923, CVE-2024-26840,     CVE-2023-52435, CVE-2024-35984, CVE-2024-26886, CVE-2023-52752, CVE-2023-52436, CVE-2024-36016,     CVE-2024-26857, CVE-2024-36902, CVE-2023-52443, CVE-2024-35997, CVE-2024-35982, CVE-2023-52469,     CVE-2024-27020, CVE-2024-35978, CVE-2024-26934, CVE-2024-27013, CVE-2023-52449, CVE-2024-26901,     CVE-2023-52444, CVE-2023-52620)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6938-1 advisory.

    It was discovered that the device input subsystem in the Linux kernel did not properly handle the case     when an event code falls outside of a bitmap. A local attacker could use this to cause a denial of service     (system crash). (CVE-2022-48619)

     discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not     properly handle certain memory allocation failure conditions, leading to a null pointer dereference     vulnerability. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2023-46343)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when     modifying certain settings values through debugfs. A privileged local attacker could use this to cause a     denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)

    Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did     not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this     to cause a denial of service (system crash). (CVE-2024-25739)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - Input Device Drivers (Mouse);

    - MTD block device drivers;

    - Network drivers;

    - TTY drivers;

    - USB subsystem;

    - File systems infrastructure;

    - F2FS file system;

    - SMB network file system;

    - BPF subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - IPv4 networking;

    - IPv6 networking;

    - Netfilter;

    - Unix domain sockets;

    - Wireless networking; (CVE-2024-26901, CVE-2021-46932, CVE-2024-26857, CVE-2024-26882, CVE-2024-26934,     CVE-2023-52449, CVE-2024-35982, CVE-2021-46933, CVE-2023-52620, CVE-2023-52444, CVE-2024-26923,     CVE-2023-52469, CVE-2024-26886, CVE-2024-36902, CVE-2023-52436, CVE-2024-36016, CVE-2024-26884,     CVE-2021-46960, CVE-2021-47194, CVE-2023-52752, CVE-2024-27020, CVE-2024-26840, CVE-2024-35997,     CVE-2024-35984, CVE-2024-35978)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6926-1 advisory.

     discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not     properly handle certain memory allocation failure conditions, leading to a null pointer dereference     vulnerability. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2023-46343)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when     modifying certain settings values through debugfs. A privileged local attacker could use this to cause a     denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)

    Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did     not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this     to cause a denial of service (system crash). (CVE-2024-25739)

    Supraja Sridhara, Benedict Schlter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the     Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit     emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service     (guest crash) or possibly execute arbitrary code. (CVE-2024-25744)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - MTD block device drivers;

    - Network drivers;

    - TTY drivers;

    - USB subsystem;

    - File systems infrastructure;

    - F2FS file system;

    - SMB network file system;

    - BPF subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - Netfilter;

    - Unix domain sockets;

    - AppArmor security module; (CVE-2023-52435, CVE-2024-27013, CVE-2024-35984, CVE-2023-52620,     CVE-2024-35997, CVE-2023-52436, CVE-2024-26884, CVE-2024-26901, CVE-2023-52469, CVE-2024-35978,     CVE-2024-26886, CVE-2024-35982, CVE-2024-36902, CVE-2024-26857, CVE-2024-26923, CVE-2023-52443,     CVE-2024-27020, CVE-2024-36016, CVE-2024-26840, CVE-2024-26934, CVE-2023-52449, CVE-2024-26882,     CVE-2023-52444, CVE-2023-52752)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3841 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3841-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     June 25, 2024                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux-5.10     Version        : 5.10.209-2~deb10u1     CVE ID         : CVE-2023-6040 CVE-2023-6356 CVE-2023-6535 CVE-2023-6536                      CVE-2023-6606 CVE-2023-6915 CVE-2023-39198 CVE-2023-46838                      CVE-2023-51779 CVE-2023-52340 CVE-2023-52436 CVE-2023-52438                      CVE-2023-52439 CVE-2023-52443 CVE-2023-52444 CVE-2023-52445                      CVE-2023-52448 CVE-2023-52449 CVE-2023-52451 CVE-2023-52454                      CVE-2023-52456 CVE-2023-52457 CVE-2023-52462 CVE-2023-52463                      CVE-2023-52464 CVE-2023-52467 CVE-2023-52469 CVE-2023-52470                      CVE-2023-52609 CVE-2023-52612 CVE-2023-52675 CVE-2023-52679                      CVE-2023-52683 CVE-2023-52686 CVE-2023-52690 CVE-2023-52691                      CVE-2023-52693 CVE-2023-52694 CVE-2023-52696 CVE-2023-52698                      CVE-2024-0646 CVE-2024-1086 CVE-2024-24860 CVE-2024-26586                      CVE-2024-26597 CVE-2024-26598 CVE-2024-26633

    Several vulnerabilities were discovered in the Linux kernel that may     lead to a privilege escalation, denial of service or information     leaks.

    For Debian 10 buster, these problems were fixed earlier in version     5.10.209-2~deb10u1.  This update additionally included many more bug     fixes from stable updates 5.10.206-5.10.209 inclusive.

    For the detailed security status of linux-5.10 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux-5.10

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3840 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3840-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     June 25, 2024                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 4.19.316-1     CVE ID         : CVE-2021-33630 CVE-2022-48627 CVE-2023-0386 CVE-2023-6040                      CVE-2023-6270 CVE-2023-7042 CVE-2023-46838 CVE-2023-47233                      CVE-2023-52340 CVE-2023-52429 CVE-2023-52436 CVE-2023-52439                      CVE-2023-52443 CVE-2023-52444 CVE-2023-52445 CVE-2023-52449                      CVE-2023-52464 CVE-2023-52469 CVE-2023-52470 CVE-2023-52486                      CVE-2023-52583 CVE-2023-52587 CVE-2023-52594 CVE-2023-52599                      CVE-2023-52600 CVE-2023-52601 CVE-2023-52602 CVE-2023-52603                      CVE-2023-52604 CVE-2023-52609 CVE-2023-52612 CVE-2023-52615                      CVE-2023-52619 CVE-2023-52620 CVE-2023-52622 CVE-2023-52623                      CVE-2023-52628 CVE-2023-52644 CVE-2023-52650 CVE-2023-52670                      CVE-2023-52679 CVE-2023-52683 CVE-2023-52691 CVE-2023-52693                      CVE-2023-52698 CVE-2023-52699 CVE-2023-52880 CVE-2024-0340                      CVE-2024-0607 CVE-2024-1086 CVE-2024-22099 CVE-2024-23849                      CVE-2024-23851 CVE-2024-24857 CVE-2024-24858 CVE-2024-24861                      CVE-2024-25739 CVE-2024-26597 CVE-2024-26600 CVE-2024-26602                      CVE-2024-26606 CVE-2024-26615 CVE-2024-26625 CVE-2024-26633                      CVE-2024-26635 CVE-2024-26636 CVE-2024-26642 CVE-2024-26645                      CVE-2024-26651 CVE-2024-26663 CVE-2024-26664 CVE-2024-26671                      CVE-2024-26675 CVE-2024-26679 CVE-2024-26685 CVE-2024-26696                      CVE-2024-26697 CVE-2024-26704 CVE-2024-26720 CVE-2024-26722                      CVE-2024-26735 CVE-2024-26744 CVE-2024-26752 CVE-2024-26754                      CVE-2024-26763 CVE-2024-26764 CVE-2024-26766 CVE-2024-26772                      CVE-2024-26773 CVE-2024-26777 CVE-2024-26778 CVE-2024-26779                      CVE-2024-26791 CVE-2024-26793 CVE-2024-26801 CVE-2024-26805                      CVE-2024-26816 CVE-2024-26817 CVE-2024-26820 CVE-2024-26825                      CVE-2024-26839 CVE-2024-26840 CVE-2024-26845 CVE-2024-26851                      CVE-2024-26852 CVE-2024-26857 CVE-2024-26859 CVE-2024-26863                      CVE-2024-26874 CVE-2024-26875 CVE-2024-26878 CVE-2024-26880                      CVE-2024-26883 CVE-2024-26884 CVE-2024-26889 CVE-2024-26894                      CVE-2024-26898 CVE-2024-26901 CVE-2024-26903 CVE-2024-26917                      CVE-2024-26922 CVE-2024-26923 CVE-2024-26931 CVE-2024-26934                      CVE-2024-26955 CVE-2024-26956 CVE-2024-26965 CVE-2024-26966                      CVE-2024-26969 CVE-2024-26973 CVE-2024-26974 CVE-2024-26976                      CVE-2024-26981 CVE-2024-26984 CVE-2024-26993 CVE-2024-26994                      CVE-2024-26997 CVE-2024-27001 CVE-2024-27008 CVE-2024-27013                      CVE-2024-27020 CVE-2024-27024 CVE-2024-27028 CVE-2024-27043                      CVE-2024-27046 CVE-2024-27059 CVE-2024-27074 CVE-2024-27075                      CVE-2024-27077 CVE-2024-27078 CVE-2024-27388 CVE-2024-27395                      CVE-2024-27396 CVE-2024-27398 CVE-2024-27399 CVE-2024-27401                      CVE-2024-27405 CVE-2024-27410 CVE-2024-27412 CVE-2024-27413                      CVE-2024-27416 CVE-2024-27419 CVE-2024-27436 CVE-2024-31076                      CVE-2024-33621 CVE-2024-35789 CVE-2024-35806 CVE-2024-35807                      CVE-2024-35809 CVE-2024-35811 CVE-2024-35815 CVE-2024-35819                      CVE-2024-35821 CVE-2024-35822 CVE-2024-35823 CVE-2024-35825                      CVE-2024-35828 CVE-2024-35830 CVE-2024-35835 CVE-2024-35847                      CVE-2024-35849 CVE-2024-35877 CVE-2024-35886 CVE-2024-35888                      CVE-2024-35893 CVE-2024-35898 CVE-2024-35902 CVE-2024-35910                      CVE-2024-35915 CVE-2024-35922 CVE-2024-35925 CVE-2024-35930                      CVE-2024-35933 CVE-2024-35935 CVE-2024-35936 CVE-2024-35944                      CVE-2024-35947 CVE-2024-35955 CVE-2024-35960 CVE-2024-35969                      CVE-2024-35973 CVE-2024-35978 CVE-2024-35982 CVE-2024-35984                      CVE-2024-35997 CVE-2024-36004 CVE-2024-36014 CVE-2024-36015                      CVE-2024-36016 CVE-2024-36017 CVE-2024-36020 CVE-2024-36286                      CVE-2024-36288 CVE-2024-36883 CVE-2024-36886 CVE-2024-36902                      CVE-2024-36904 CVE-2024-36905 CVE-2024-36919 CVE-2024-36933                      CVE-2024-36934 CVE-2024-36940 CVE-2024-36941 CVE-2024-36946                      CVE-2024-36950 CVE-2024-36954 CVE-2024-36959 CVE-2024-36960                      CVE-2024-36964 CVE-2024-36971 CVE-2024-37353 CVE-2024-37356                      CVE-2024-38381 CVE-2024-38549 CVE-2024-38552 CVE-2024-38558                      CVE-2024-38559 CVE-2024-38560 CVE-2024-38565 CVE-2024-38567                      CVE-2024-38578 CVE-2024-38579 CVE-2024-38582 CVE-2024-38583                      CVE-2024-38587 CVE-2024-38589 CVE-2024-38596 CVE-2024-38598                      CVE-2024-38599 CVE-2024-38601 CVE-2024-38612 CVE-2024-38618                      CVE-2024-38621 CVE-2024-38627 CVE-2024-38633 CVE-2024-38634                      CVE-2024-38637 CVE-2024-38659 CVE-2024-38780 CVE-2024-39292

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 10 buster, these problems have been fixed in version     4.19.316-1.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel-generic installed on the remote host is prior to 5.15.160 / 5.15.160_smp. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2024-157-01 advisory.

    New kernel packages are available for Slackware 15.0 to fix security issues.

Tenable has extracted the preceding description block directly from the kernel-generic security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 23.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6724-2 advisory.

  - Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really     useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides     a certain initial portion of the to be transferred data, these parts are directly translated into what     Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of     length zero, lead to a de-reference of NULL in core networking code. (CVE-2023-46838)

  - sec_attest_info in drivers/accel/habanalabs/common/habanalabs_ioctl.c in the Linux kernel through 6.6.5     allows an information leak to user space because info->pad0 is not initialized. (CVE-2023-50431)

  - dm_table_create in drivers/md/dm-table.c in the Linux kernel through 6.7.4 can attempt to (in     alloc_targets) allocate more than INT_MAX bytes, and crash, because of a missing check for struct     dm_ioctl.target_count. (CVE-2023-52429)

  - In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential OOBs in     smb2_parse_contexts() Validate offsets and lengths before dereferencing create contexts in     smb2_parse_contexts(). This fixes following oops when accessing invalid create contexts from server: BUG:
    unable to handle page fault for address: ffff8881178d8cc3 #PF: supervisor read access in kernel mode #PF:
    error_code(0x0000) - not-present page PGD 4a01067 P4D 4a01067 PUD 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU:
    3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),     BIOS rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014 RIP: 0010:smb2_parse_contexts+0xa0/0x3a0     [cifs] Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00 00 00 8b 45 00 85 c0 74 61 41     29 c5 48 01 c5 41 83 fd 0f 76 55 <0f> b7 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00 RSP:
    0018:ffffc900007939e0 EFLAGS: 00010216 RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90     RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000 RBP: ffff8881178d8cbf R08:
    ffffc90000793c22 R09: 0000000000000000 R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000     R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22 FS: 00007f873753cbc0(0000)     GS:ffff88806bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2:
    ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: <TASK> ?
    __die+0x23/0x70 ? page_fault_oops+0x181/0x480 ? search_module_extables+0x19/0x60 ?     srso_alias_return_thunk+0x5/0xfbef5 ? exc_page_fault+0x1b6/0x1c0 ? asm_exc_page_fault+0x26/0x30 ?     smb2_parse_contexts+0xa0/0x3a0 [cifs] SMB2_open+0x38d/0x5f0 [cifs] ? smb2_is_path_accessible+0x138/0x260     [cifs] smb2_is_path_accessible+0x138/0x260 [cifs] cifs_is_path_remote+0x8d/0x230 [cifs]     cifs_mount+0x7e/0x350 [cifs] cifs_smb3_do_mount+0x128/0x780 [cifs] smb3_get_tree+0xd9/0x290 [cifs]     vfs_get_tree+0x2c/0x100 ? capable+0x37/0x70 path_mount+0x2d7/0xb80 ? srso_alias_return_thunk+0x5/0xfbef5 ?
    _raw_spin_unlock_irqrestore+0x44/0x60 __x64_sys_mount+0x11a/0x150 do_syscall_64+0x47/0xf0     entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8737657b1e (CVE-2023-52434)

  - In the Linux kernel, the following vulnerability has been resolved: net: prevent mss overflow in     skb_segment() Once again syzbot is able to crash the kernel in skb_segment() [1] GSO_BY_FRAGS is a     forbidden value, but unfortunately the following computation in skb_segment() can reach it quite easily :
    mss = mss * partial_segs; 65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to a bad final     result. Make sure to limit segmentation so that the new mss value is smaller than GSO_BY_FRAGS. [1]     general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP     KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-     executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute     Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30     net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48     b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84     24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX:
    ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578     R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12:
    ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS:
    0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0:
    0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400 Call Trace: <TASK> udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109     ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53
    __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline]     validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338     dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276     packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119     sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745
    __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto     net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64     arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83     entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3     e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0     ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246     ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX:
    0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540     R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13:
    0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003 </TASK> Modules linked in: ---[ end trace     0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed     ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea     03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS:
    00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI:
    ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated--- (CVE-2023-52435)

  - In the Linux kernel, the following vulnerability has been resolved: f2fs: explicitly null-terminate the     xattr list When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile     assumption that the unused xattr space is always zeroed. (CVE-2023-52436)

  - In the Linux kernel, the following vulnerability has been resolved: binder: fix use-after-free in     shinker's callback The mmap read lock is used during the shrinker's callback, which means that using     alloc->vma pointer isn't safe as it can race with munmap(). As of commit dd2283f2605e (mm: mmap: zap     pages with read mmap_sem in munmap) the mmap lock is downgraded after the vma has been isolated. I was     able to reproduce this issue by manually adding some delays and triggering page reclaiming through the     shrinker's debug sysfs. The following KASAN report confirms the UAF:
    ================================================================== BUG: KASAN: slab-use-after-free in     zap_page_range_single+0x470/0x4b8 Read of size 8 at addr ffff356ed50e50f0 by task bash/478 CPU: 1 PID: 478     Comm: bash Not tainted 6.6.0-rc5-00055-g1c8b86a3799f-dirty #70 Hardware name: linux,dummy-virt (DT) Call     trace: zap_page_range_single+0x470/0x4b8 binder_alloc_free_page+0x608/0xadc
    __list_lru_walk_one+0x130/0x3b0 list_lru_walk_node+0xc4/0x22c binder_shrink_scan+0x108/0x1dc     shrinker_debugfs_scan_write+0x2b4/0x500 full_proxy_write+0xd4/0x140 vfs_write+0x1ac/0x758     ksys_write+0xf0/0x1dc __arm64_sys_write+0x6c/0x9c Allocated by task 492: kmem_cache_alloc+0x130/0x368     vm_area_alloc+0x2c/0x190 mmap_region+0x258/0x18bc do_mmap+0x694/0xa60 vm_mmap_pgoff+0x170/0x29c     ksys_mmap_pgoff+0x290/0x3a0 __arm64_sys_mmap+0xcc/0x144 Freed by task 491: kmem_cache_free+0x17c/0x3c8     vm_area_free_rcu_cb+0x74/0x98 rcu_core+0xa38/0x26d4 rcu_core_si+0x10/0x1c __do_softirq+0x2fc/0xd24 Last     potentially related work creation: __call_rcu_common.constprop.0+0x6c/0xba0 call_rcu+0x10/0x1c     vm_area_free+0x18/0x24 remove_vma+0xe4/0x118 do_vmi_align_munmap.isra.0+0x718/0xb5c     do_vmi_munmap+0xdc/0x1fc __vm_munmap+0x10c/0x278 __arm64_sys_munmap+0x58/0x7c Fix this issue by performing     instead a vma_lookup() which will fail to find the vma that was isolated before the mmap lock downgrade.
    Note that this option has better performance than upgrading to a mmap write lock which would increase     contention. Plus, mmap_write_trylock() has been recently removed anyway. (CVE-2023-52438)

  - In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open     core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev     = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release     get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev)
    ------------------------------------------------------- In the core-1 uio_unregister_device(), the     device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister,     put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2     will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double     freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
    (CVE-2023-52439)

  - An out-of-bounds read vulnerability was found in smb2_dump_detail in fs/smb/client/smb2ops.c in the Linux     Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.
    (CVE-2023-6610)

  - An issue was discovered in ksmbd in the Linux kernel before 6.6.10. smb2_get_data_area_len in     fs/smb/server/smb2misc.c can cause an smb_strndup_from_utf16 out-of-bounds access because the relationship     between Name data and CreateContexts data is mishandled. (CVE-2024-22705)

  - In btrfs_get_root_ref in fs/btrfs/disk-io.c in the Linux kernel through 6.7.1, there can be an assertion     failure and crash because a subvolume can be read out too soon after its root item is inserted upon     subvolume creation. (CVE-2024-23850)

  - copy_params in drivers/md/dm-ioctl.c in the Linux kernel through 6.7.1 can attempt to allocate more than     INT_MAX bytes, and crash, because of a missing param_kernel->data_size check. This is related to     ctl_ioctl. (CVE-2024-23851)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6725-2 advisory.

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate     certain data structure fields when parsing lease contexts, leading to an out-of-bounds read vulnerability.
    A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-1194)

    Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel,     leading to a use-after-free vulnerability. A remote attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2023-32254)

    It was discovered that a race condition existed in the KSMBD implementation in the Linux kernel when     handling session connections, leading to a use- after-free vulnerability. A remote attacker could use this     to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32258)

    It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes     in certain operations, leading to an integer underflow and out-of-bounds read vulnerability. A remote     attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-38427)

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate SMB     request protocol IDs, leading to a out-of- bounds read vulnerability. A remote attacker could possibly use     this to cause a denial of service (system crash). (CVE-2023-38430)

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate     packet header sizes in certain situations, leading to an out-of-bounds read vulnerability. A remote     attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-38431)

    It was discovered that the KSMBD implementation in the Linux kernel did not properly handle session setup     requests, leading to an out-of-bounds read vulnerability. A remote attacker could use this to expose     sensitive information. (CVE-2023-3867)

    Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly     handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a     guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838)

    It was discovered that the IPv6 implementation of the Linux kernel did not properly manage route cache     memory usage. A remote attacker could use this to cause a denial of service (memory exhaustion).
    (CVE-2023-52340)

    It was discovered that the device mapper driver in the Linux kernel did not properly validate target size     during certain memory allocations. A local attacker could use this to cause a denial of service (system     crash). (CVE-2023-52429, CVE-2024-23851)

    Yang Chaoming discovered that the KSMBD implementation in the Linux kernel did not properly validate     request buffer sizes, leading to an out-of-bounds read vulnerability. An attacker could use this to cause     a denial of service (system crash) or possibly expose sensitive information. (CVE-2024-22705)

    Chenyuan Yang discovered that the btrfs file system in the Linux kernel did not properly handle read     operations on newly created subvolumes in certain conditions. A local attacker could use this to cause a     denial of service (system crash). (CVE-2024-23850)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to     a null pointer dereference vulnerability. A privileged local attacker could use this to possibly cause a     denial of service (system crash). (CVE-2024-24860)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - Architecture specifics;

    - Block layer;

    - Cryptographic API;

    - Android drivers;

    - EDAC drivers;

    - GPU drivers;

    - Media drivers;

    - Multifunction device drivers;

    - MTD block device drivers;

    - Network drivers;

    - NVME drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - EFI Variable file system;

    - F2FS file system;

    - GFS2 file system;

    - SMB network file system;

    - BPF subsystem;

    - IPv6 Networking;

    - Network Traffic Control;

    - AppArmor security module; (CVE-2023-52463, CVE-2023-52445, CVE-2023-52462, CVE-2023-52609,     CVE-2023-52448, CVE-2023-52457, CVE-2023-52464, CVE-2023-52456, CVE-2023-52454, CVE-2023-52438,     CVE-2023-52480, CVE-2023-52443, CVE-2023-52442, CVE-2024-26631, CVE-2023-52439, CVE-2023-52612,     CVE-2024-26598, CVE-2024-26586, CVE-2024-26589, CVE-2023-52444, CVE-2023-52436, CVE-2024-26633,     CVE-2024-26597, CVE-2023-52458, CVE-2024-26591, CVE-2023-52449, CVE-2023-52467, CVE-2023-52441,     CVE-2023-52610, CVE-2023-52451, CVE-2023-52469, CVE-2023-52470)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 23.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6724-1 advisory.

  - Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really     useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides     a certain initial portion of the to be transferred data, these parts are directly translated into what     Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of     length zero, lead to a de-reference of NULL in core networking code. (CVE-2023-46838)

  - sec_attest_info in drivers/accel/habanalabs/common/habanalabs_ioctl.c in the Linux kernel through 6.6.5     allows an information leak to user space because info->pad0 is not initialized. (CVE-2023-50431)

  - dm_table_create in drivers/md/dm-table.c in the Linux kernel through 6.7.4 can attempt to (in     alloc_targets) allocate more than INT_MAX bytes, and crash, because of a missing check for struct     dm_ioctl.target_count. (CVE-2023-52429)

  - In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential OOBs in     smb2_parse_contexts() Validate offsets and lengths before dereferencing create contexts in     smb2_parse_contexts(). This fixes following oops when accessing invalid create contexts from server: BUG:
    unable to handle page fault for address: ffff8881178d8cc3 #PF: supervisor read access in kernel mode #PF:
    error_code(0x0000) - not-present page PGD 4a01067 P4D 4a01067 PUD 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU:
    3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),     BIOS rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014 RIP: 0010:smb2_parse_contexts+0xa0/0x3a0     [cifs] Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00 00 00 8b 45 00 85 c0 74 61 41     29 c5 48 01 c5 41 83 fd 0f 76 55 <0f> b7 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00 RSP:
    0018:ffffc900007939e0 EFLAGS: 00010216 RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90     RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000 RBP: ffff8881178d8cbf R08:
    ffffc90000793c22 R09: 0000000000000000 R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000     R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22 FS: 00007f873753cbc0(0000)     GS:ffff88806bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2:
    ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: <TASK> ?
    __die+0x23/0x70 ? page_fault_oops+0x181/0x480 ? search_module_extables+0x19/0x60 ?     srso_alias_return_thunk+0x5/0xfbef5 ? exc_page_fault+0x1b6/0x1c0 ? asm_exc_page_fault+0x26/0x30 ?     smb2_parse_contexts+0xa0/0x3a0 [cifs] SMB2_open+0x38d/0x5f0 [cifs] ? smb2_is_path_accessible+0x138/0x260     [cifs] smb2_is_path_accessible+0x138/0x260 [cifs] cifs_is_path_remote+0x8d/0x230 [cifs]     cifs_mount+0x7e/0x350 [cifs] cifs_smb3_do_mount+0x128/0x780 [cifs] smb3_get_tree+0xd9/0x290 [cifs]     vfs_get_tree+0x2c/0x100 ? capable+0x37/0x70 path_mount+0x2d7/0xb80 ? srso_alias_return_thunk+0x5/0xfbef5 ?
    _raw_spin_unlock_irqrestore+0x44/0x60 __x64_sys_mount+0x11a/0x150 do_syscall_64+0x47/0xf0     entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8737657b1e (CVE-2023-52434)

  - In the Linux kernel, the following vulnerability has been resolved: net: prevent mss overflow in     skb_segment() Once again syzbot is able to crash the kernel in skb_segment() [1] GSO_BY_FRAGS is a     forbidden value, but unfortunately the following computation in skb_segment() can reach it quite easily :
    mss = mss * partial_segs; 65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to a bad final     result. Make sure to limit segmentation so that the new mss value is smaller than GSO_BY_FRAGS. [1]     general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP     KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-     executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute     Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30     net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48     b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84     24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX:
    ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578     R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12:
    ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS:
    0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0:
    0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400 Call Trace: <TASK> udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109     ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53
    __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline]     validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338     dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276     packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119     sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745
    __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto     net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64     arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83     entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3     e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0     ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246     ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX:
    0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540     R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13:
    0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003 </TASK> Modules linked in: ---[ end trace     0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed     ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea     03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS:
    00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI:
    ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated--- (CVE-2023-52435)

  - In the Linux kernel, the following vulnerability has been resolved: f2fs: explicitly null-terminate the     xattr list When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile     assumption that the unused xattr space is always zeroed. (CVE-2023-52436)

  - In the Linux kernel, the following vulnerability has been resolved: binder: fix use-after-free in     shinker's callback The mmap read lock is used during the shrinker's callback, which means that using     alloc->vma pointer isn't safe as it can race with munmap(). As of commit dd2283f2605e (mm: mmap: zap     pages with read mmap_sem in munmap) the mmap lock is downgraded after the vma has been isolated. I was     able to reproduce this issue by manually adding some delays and triggering page reclaiming through the     shrinker's debug sysfs. The following KASAN report confirms the UAF:
    ================================================================== BUG: KASAN: slab-use-after-free in     zap_page_range_single+0x470/0x4b8 Read of size 8 at addr ffff356ed50e50f0 by task bash/478 CPU: 1 PID: 478     Comm: bash Not tainted 6.6.0-rc5-00055-g1c8b86a3799f-dirty #70 Hardware name: linux,dummy-virt (DT) Call     trace: zap_page_range_single+0x470/0x4b8 binder_alloc_free_page+0x608/0xadc
    __list_lru_walk_one+0x130/0x3b0 list_lru_walk_node+0xc4/0x22c binder_shrink_scan+0x108/0x1dc     shrinker_debugfs_scan_write+0x2b4/0x500 full_proxy_write+0xd4/0x140 vfs_write+0x1ac/0x758     ksys_write+0xf0/0x1dc __arm64_sys_write+0x6c/0x9c Allocated by task 492: kmem_cache_alloc+0x130/0x368     vm_area_alloc+0x2c/0x190 mmap_region+0x258/0x18bc do_mmap+0x694/0xa60 vm_mmap_pgoff+0x170/0x29c     ksys_mmap_pgoff+0x290/0x3a0 __arm64_sys_mmap+0xcc/0x144 Freed by task 491: kmem_cache_free+0x17c/0x3c8     vm_area_free_rcu_cb+0x74/0x98 rcu_core+0xa38/0x26d4 rcu_core_si+0x10/0x1c __do_softirq+0x2fc/0xd24 Last     potentially related work creation: __call_rcu_common.constprop.0+0x6c/0xba0 call_rcu+0x10/0x1c     vm_area_free+0x18/0x24 remove_vma+0xe4/0x118 do_vmi_align_munmap.isra.0+0x718/0xb5c     do_vmi_munmap+0xdc/0x1fc __vm_munmap+0x10c/0x278 __arm64_sys_munmap+0x58/0x7c Fix this issue by performing     instead a vma_lookup() which will fail to find the vma that was isolated before the mmap lock downgrade.
    Note that this option has better performance than upgrading to a mmap write lock which would increase     contention. Plus, mmap_write_trylock() has been recently removed anyway. (CVE-2023-52438)

  - In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open     core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev     = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release     get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev)
    ------------------------------------------------------- In the core-1 uio_unregister_device(), the     device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister,     put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2     will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double     freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
    (CVE-2023-52439)

  - An out-of-bounds read vulnerability was found in smb2_dump_detail in fs/smb/client/smb2ops.c in the Linux     Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.
    (CVE-2023-6610)

  - An issue was discovered in ksmbd in the Linux kernel before 6.6.10. smb2_get_data_area_len in     fs/smb/server/smb2misc.c can cause an smb_strndup_from_utf16 out-of-bounds access because the relationship     between Name data and CreateContexts data is mishandled. (CVE-2024-22705)

  - In btrfs_get_root_ref in fs/btrfs/disk-io.c in the Linux kernel through 6.7.1, there can be an assertion     failure and crash because a subvolume can be read out too soon after its root item is inserted upon     subvolume creation. (CVE-2024-23850)

  - copy_params in drivers/md/dm-ioctl.c in the Linux kernel through 6.7.1 can attempt to allocate more than     INT_MAX bytes, and crash, because of a missing param_kernel->data_size check. This is related to     ctl_ioctl. (CVE-2024-23851)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6725-1 advisory.

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate     certain data structure fields when parsing lease contexts, leading to an out-of-bounds read vulnerability.
    A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-1194)

    Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel,     leading to a use-after-free vulnerability. A remote attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2023-32254)

    It was discovered that a race condition existed in the KSMBD implementation in the Linux kernel when     handling session connections, leading to a use- after-free vulnerability. A remote attacker could use this     to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32258)

    It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes     in certain operations, leading to an integer underflow and out-of-bounds read vulnerability. A remote     attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-38427)

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate SMB     request protocol IDs, leading to a out-of- bounds read vulnerability. A remote attacker could possibly use     this to cause a denial of service (system crash). (CVE-2023-38430)

    Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate     packet header sizes in certain situations, leading to an out-of-bounds read vulnerability. A remote     attacker could use this to cause a denial of service (system crash) or possibly expose sensitive     information. (CVE-2023-38431)

    It was discovered that the KSMBD implementation in the Linux kernel did not properly handle session setup     requests, leading to an out-of-bounds read vulnerability. A remote attacker could use this to expose     sensitive information. (CVE-2023-3867)

    Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly     handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a     guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838)

    It was discovered that the IPv6 implementation of the Linux kernel did not properly manage route cache     memory usage. A remote attacker could use this to cause a denial of service (memory exhaustion).
    (CVE-2023-52340)

    It was discovered that the device mapper driver in the Linux kernel did not properly validate target size     during certain memory allocations. A local attacker could use this to cause a denial of service (system     crash). (CVE-2023-52429, CVE-2024-23851)

    Yang Chaoming discovered that the KSMBD implementation in the Linux kernel did not properly validate     request buffer sizes, leading to an out-of-bounds read vulnerability. An attacker could use this to cause     a denial of service (system crash) or possibly expose sensitive information. (CVE-2024-22705)

    Chenyuan Yang discovered that the btrfs file system in the Linux kernel did not properly handle read     operations on newly created subvolumes in certain conditions. A local attacker could use this to cause a     denial of service (system crash). (CVE-2024-23850)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to     a null pointer dereference vulnerability. A privileged local attacker could use this to possibly cause a     denial of service (system crash). (CVE-2024-24860)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - Architecture specifics;

    - Block layer;

    - Cryptographic API;

    - Android drivers;

    - EDAC drivers;

    - GPU drivers;

    - Media drivers;

    - Multifunction device drivers;

    - MTD block device drivers;

    - Network drivers;

    - NVME drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - EFI Variable file system;

    - F2FS file system;

    - GFS2 file system;

    - SMB network file system;

    - BPF subsystem;

    - IPv6 Networking;

    - Network Traffic Control;

    - AppArmor security module; (CVE-2023-52463, CVE-2023-52445, CVE-2023-52462, CVE-2023-52609,     CVE-2023-52448, CVE-2023-52457, CVE-2023-52464, CVE-2023-52456, CVE-2023-52454, CVE-2023-52438,     CVE-2023-52480, CVE-2023-52443, CVE-2023-52442, CVE-2024-26631, CVE-2023-52439, CVE-2023-52612,     CVE-2024-26598, CVE-2024-26586, CVE-2024-26589, CVE-2023-52444, CVE-2023-52436, CVE-2024-26633,     CVE-2024-26597, CVE-2023-52458, CVE-2024-26591, CVE-2023-52449, CVE-2023-52467, CVE-2023-52441,     CVE-2023-52610, CVE-2023-52451, CVE-2023-52469, CVE-2023-52470)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6688-1 advisory.

    Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly     handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a     guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838)

    It was discovered that the Habana's AI Processors driver in the Linux kernel did not properly initialize     certain data structures before passing them to user space. A local attacker could use this to expose     sensitive information (kernel memory). (CVE-2023-50431)

    Murray McAllister discovered that the VMware Virtual GPU DRM driver in the Linux kernel did not properly     handle memory objects when storing surfaces, leading to a use-after-free vulnerability. A local attacker     in a guest VM could use this to cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2023-5633)

    It was discovered that the CIFS network file system implementation in the Linux kernel did not properly     validate certain SMB messages, leading to an out-of-bounds read vulnerability. An attacker could use this     to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-6610)

    It was discovered that the VirtIO subsystem in the Linux kernel did not properly initialize memory in some     situations. A local attacker could use this to possibly expose sensitive information (kernel memory).
    (CVE-2024-0340)

    Lonial Con discovered that the netfilter subsystem in the Linux kernel did not properly handle element     deactivation in certain cases, leading to a use-after-free vulnerability. A local attacker could use this     to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2024-1085)

    Notselwyn discovered that the netfilter subsystem in the Linux kernel did not properly handle verdict     parameters in certain cases, leading to a use- after-free vulnerability. A local attacker could use this     to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2024-1086)

    Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of-     bounds read vulnerability. An attacker could use this to possibly cause a denial of service (system     crash). (CVE-2024-23849)

    It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to     a null pointer dereference vulnerability. A privileged local attacker could use this to possibly cause a     denial of service (system crash). (CVE-2024-24860)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - Architecture specifics;

    - Block layer;

    - ACPI drivers;

    - Android drivers;

    - EDAC drivers;

    - GPU drivers;

    - InfiniBand drivers;

    - Media drivers;

    - Multifunction device drivers;

    - MTD block device drivers;

    - Network drivers;

    - NVME drivers;

    - PHY drivers;

    - PWM drivers;

    - SCSI drivers;

    - SPMI drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - Ceph distributed file system;

    - EFI Variable file system;

    - Ext4 file system;

    - F2FS file system;

    - GFS2 file system;

    - JFS file system;

    - SMB network file system;

    - BPF subsystem;

    - Logical Link Layer;

    - Netfilter;

    - Unix domain sockets;

    - AppArmor security module; (CVE-2024-26599, CVE-2023-52604, CVE-2023-52439, CVE-2024-26627,     CVE-2024-26601, CVE-2024-26628, CVE-2023-52607, CVE-2023-52456, CVE-2023-52602, CVE-2023-52443,     CVE-2023-52599, CVE-2023-52603, CVE-2024-26588, CVE-2024-26581, CVE-2023-52600, CVE-2024-26624,     CVE-2023-52584, CVE-2024-26625, CVE-2023-52606, CVE-2023-52463, CVE-2023-52464, CVE-2023-52597,     CVE-2023-52595, CVE-2023-52458, CVE-2023-52457, CVE-2023-52438, CVE-2023-52469, CVE-2023-52462,     CVE-2024-26589, CVE-2024-26592, CVE-2024-26594, CVE-2023-52601, CVE-2023-52593, CVE-2023-52436,     CVE-2023-52447, CVE-2023-52587, CVE-2023-52445, CVE-2023-52454, CVE-2023-52451, CVE-2023-52605,     CVE-2024-26597, CVE-2023-52448, CVE-2023-52598, CVE-2024-26591, CVE-2023-52449, CVE-2023-52444,     CVE-2023-52583, CVE-2023-52589, CVE-2024-26598, CVE-2023-52470, CVE-2023-52594, CVE-2023-52588,     CVE-2023-52467, CVE-2024-26600)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
205331	Ubuntu 16.04 LTS : Linux kernel (Azure) vulnerabilities (USN-6926-3)	Nessus	Ubuntu Local Security Checks	high
204956	Ubuntu 14.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-6926-2)	Nessus	Ubuntu Local Security Checks	high
204920	Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-6938-1)	Nessus	Ubuntu Local Security Checks	high
204834	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-6926-1)	Nessus	Ubuntu Local Security Checks	high
201106	Debian dla-3841 : linux-config-5.10 - security update	Nessus	Debian Local Security Checks	high
201099	Debian dla-3840 : hyperv-daemons - security update	Nessus	Debian Local Security Checks	high
200129	Slackware Linux 15.0 kernel-generic Multiple Vulnerabilities (SSA:2024-157-01)	Nessus	Slackware Local Security Checks	high
193407	Ubuntu 20.04 LTS : Linux kernel (Xilinx ZynqMP) vulnerabilities (USN-6726-3)	Nessus	Ubuntu Local Security Checks	high
193377	Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6724-2)	Nessus	Ubuntu Local Security Checks	high
193376	Ubuntu 20.04 LTS : Linux kernel (IoT) vulnerabilities (USN-6726-2)	Nessus	Ubuntu Local Security Checks	high
193375	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel (AWS) vulnerabilities (USN-6725-2)	Nessus	Ubuntu Local Security Checks	critical
193085	Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6724-1)	Nessus	Ubuntu Local Security Checks	high
193084	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6725-1)	Nessus	Ubuntu Local Security Checks	critical
193081	Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-6726-1)	Nessus	Ubuntu Local Security Checks	high
191796	Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerabilities (USN-6688-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2023-52436

high

Tenable Plugins

high

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high

high

high

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critical

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critical

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high