The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities:

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2519 advisory.

    This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify     the code of a running kernel.

    Security Fix(es):

    * Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause     kernel panic (CVE-2020-10711)

    * kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2104 advisory.

  - An issue was discovered in drivers/i2c/i2c-core-smbus.c in the Linux kernel before 4.14.15. There is an     out of bounds write in the function i2c_smbus_xfer_emulated. (CVE-2017-18551)

  - An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function     allocate_trace_buffer in the file kernel/trace/trace.c. (CVE-2017-18595)

  - An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash). (CVE-2019-12614)

  - An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS     partially wedges when a chgrp fails on account of being out of disk quota. xfs_setattr_nonsize is failing     to unlock the ILOCK after the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS attack     vector, but it might result as well in remote DoS if the XFS filesystem is exported for instance via NFS.
    (CVE-2019-15538)

  - In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and     unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list     in fs/ext4/super.c. (CVE-2019-19447)

  - In the Linux kernel before 5.3.12, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9. (CVE-2019-19524)

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - In the Android kernel in i2c driver there is a possible out of bounds write due to memory corruption. This     could lead to local escalation of privilege with System execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9454)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

  - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to     a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it,     aka CID-2e90ca68b0d2. (CVE-2020-9383)

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2291 advisory.

    This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify     the code of a running kernel.

    Security Fix(es):

    * kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

    * Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause     kernel panic (CVE-2020-10711)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-8834: KVM on Power8 processors had a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc_{save,restore}_tm, leading to a stack corruption. Because of this, an attacker with the ability to run code in kernel space of a guest VM can cause the host kernel to panic (bnc#1168276).

CVE-2020-11494: An issue was discovered in slc_bump in drivers/net/can/slcan.c, which allowed attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL (bnc#1168424).

CVE-2020-10942: In get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls (bnc#1167629).

CVE-2019-9458: In the video driver there was a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed (bnc#1168295).

CVE-2019-3701: Fixed an issue in can_can_gw_rcv, which could cause a system crash (bnc#1120386).

CVE-2019-19770: Fixed a use-after-free in the debugfs_remove function (bsc#1159198).

CVE-2020-11669: Fixed an issue where arch/powerpc/kernel/idle_book3s.S did not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR (bnc#1169390).

CVE-2020-2732: Fixed an issue where under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest (bnc#1163971).

CVE-2020-8647: There was a use-after-free vulnerability in the vc_do_resize function in drivers/tty/vt/vt.c (bnc#1162929 1164078).

CVE-2020-8649: There was a use-after-free vulnerability in the vgacon_invert_region function in drivers/video/console/vgacon.c (bnc#1162929 1162931).

CVE-2020-9383: An issue was discovered set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it (bnc#1165111).

CVE-2019-19768: Fixed a use-after-free in the __blk_add_trace function in kernel/trace/blktrace.c (bnc#1159285).

CVE-2018-20836: Fixed an issue where a race condition in smp_task_timedout() and smp_task_done() cloud lead to a use-after-free (bnc#1134395).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP4 azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-8834: KVM on Power8 processors had a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc_{save,restore}_tm, leading to a stack corruption. Because of this, an attacker with the ability to run code in kernel space of a guest VM can cause the host kernel to panic (bnc#1168276).

CVE-2020-11494: An issue was discovered in slc_bump in drivers/net/can/slcan.c, which allowed attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL (bnc#1168424).

CVE-2020-10942: In get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls (bnc#1167629).

CVE-2019-9458: In the video driver there was a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed (bnc#1168295).

CVE-2019-3701: Fixed an issue in can_can_gw_rcv, which could cause a system crash (bnc#1120386).

CVE-2019-19770: Fixed a use-after-free in the debugfs_remove function (bsc#1159198).

CVE-2020-11669: Fixed an issue where arch/powerpc/kernel/idle_book3s.S did not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR (bnc#1169390).

CVE-2020-8647: There was a use-after-free vulnerability in the vc_do_resize function in drivers/tty/vt/vt.c (bnc#1162929).

CVE-2020-8649: There was a use-after-free vulnerability in the vgacon_invert_region function in drivers/video/console/vgacon.c (bnc#1162931).

CVE-2020-9383: An issue was discovered set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it (bnc#1165111).

CVE-2019-19768: Fixed a use-after-free in the __blk_add_trace function in kernel/trace/blktrace.c (bnc#1159285).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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

  - CVE-2019-2182     Hanjun Guo and Lei Li reported a race condition in the     arm64 virtual memory management code, which could lead     to an information disclosure, denial of service (crash),     or possibly privilege escalation.

  - CVE-2019-5108     Mitchell Frank of Cisco discovered that when the IEEE     802.11 (WiFi) stack was used in AP mode with roaming, it     would trigger roaming for a newly associated station     before the station was authenticated. An attacker within     range of the AP could use this to cause a denial of     service, either by filling up a switching table or by     redirecting traffic away from other stations.

  - CVE-2019-19319     Jungyeon discovered that a crafted filesystem can cause     the ext4 implementation to deallocate or reallocate     journal blocks. A user permitted to mount filesystems     could use this to cause a denial of service (crash), or     possibly for privilege escalation.

  - CVE-2019-19462     The syzbot tool found a missing error check in the     'relay' library used to implement various files under     debugfs. A local user permitted to access debugfs could     use this to cause a denial of service (crash) or     possibly for privilege escalation.

  - CVE-2019-19768     Tristan Madani reported a race condition in the blktrace     debug facility that could result in a use-after-free. A     local user able to trigger removal of block devices     could possibly use this to cause a denial of service     (crash) or for privilege escalation.

  - CVE-2019-20806     A potential NULL pointer dereference was discovered in     the tw5864 media driver. The security impact of this is     unclear.

  - CVE-2019-20811     The Hulk Robot tool found a reference-counting bug in an     error path in the network subsystem. The security impact     of this is unclear.

  - CVE-2020-0543     Researchers at VU Amsterdam discovered that on some     Intel CPUs supporting the RDRAND and RDSEED     instructions, part of a random value generated by these     instructions may be used in a later speculative     execution on any core of the same physical CPU.
    Depending on how these instructions are used by     applications, a local user or VM guest could use this to     obtain sensitive information such as cryptographic keys     from other users or VMs.

  This vulnerability can be mitigated by a microcode update, either as   part of system firmware (BIOS) or through the intel-microcode   package in Debian's non-free archive section. This kernel update   only provides reporting of the vulnerability and the option to   disable the mitigation if it is not needed.

  - CVE-2020-2732     Paulo Bonzini discovered that the KVM implementation for     Intel processors did not properly handle instruction     emulation for L2 guests when nested virtualization is     enabled. This could allow an L2 guest to cause privilege     escalation, denial of service, or information leaks in     the L1 guest.

  - CVE-2020-8428     Al Viro discovered a potential use-after-free in the     filesystem core (vfs). A local user could exploit this     to cause a denial of service (crash) or possibly to     obtain sensitive information from the kernel.

  - CVE-2020-8647, CVE-2020-8649     The Hulk Robot tool found a potential MMIO out-of-bounds     access in the vgacon driver. A local user permitted to     access a virtual terminal (/dev/tty1 etc.) on a system     using the vgacon driver could use this to cause a denial     of service (crash or memory corruption) or possibly for     privilege escalation.

  - CVE-2020-8648     The syzbot tool found a race condition in the the     virtual terminal driver, which could result in a     use-after-free. A local user permitted to access a     virtual terminal could use this to cause a denial of     service (crash or memory corruption) or possibly for     privilege escalation.

  - CVE-2020-9383     Jordy Zomer reported an incorrect range check in the     floppy driver which could lead to a static out-of-bounds     access. A local user permitted to access a floppy drive     could use this to cause a denial of service (crash or     memory corruption) or possibly for privilege escalation.

  - CVE-2020-10711     Matthew Sheets reported NULL pointer dereference issues     in the SELinux subsystem while receiving CIPSO packet     with null category. A remote attacker can take advantage     of this flaw to cause a denial of service (crash). Note     that this issue does not affect the binary packages     distributed in Debian as CONFIG_NETLABEL is not enabled.

  - CVE-2020-10732     An information leak of kernel private memory to     userspace was found in the kernel's implementation of     core dumping userspace processes.

  - CVE-2020-10751     Dmitry Vyukov reported that the SELinux subsystem did     not properly handle validating multiple messages, which     could allow a privileged attacker to bypass SELinux     netlink restrictions.

  - CVE-2020-10757     Fan Yang reported a flaw in the way mremap handled DAX     hugepages, allowing a local user to escalate their     privileges

  - CVE-2020-10942     It was discovered that the vhost_net driver did not     properly validate the type of sockets set as back-ends.
    A local user permitted to access /dev/vhost-net could     use this to cause a stack corruption via crafted system     calls, resulting in denial of service (crash) or     possibly privilege escalation.

  - CVE-2020-11494     It was discovered that the slcan (serial line CAN)     network driver did not fully initialise CAN headers for     received packets, resulting in an information leak from     the kernel to user-space or over the CAN network.

  - CVE-2020-11565     Entropy Moe reported that the shared memory filesystem     (tmpfs) did not correctly handle an 'mpol' mount option     specifying an empty node list, leading to a stack-based     out-of-bounds write. If user namespaces are enabled, a     local user could use this to cause a denial of service     (crash) or possibly for privilege escalation.

  - CVE-2020-11608, CVE-2020-11609, CVE-2020-11668     It was discovered that the ov519, stv06xx, and     xirlink_cit media drivers did not properly validate USB     device descriptors. A physically present user with a     specially constructed USB device could use this to cause     a denial-of-service (crash) or possibly for privilege     escalation.

  - CVE-2020-12114     Piotr Krysiuk discovered a race condition between the     umount and pivot_root operations in the filesystem core     (vfs). A local user with the CAP_SYS_ADMIN capability in     any user namespace could use this to cause a denial of     service (crash).

  - CVE-2020-12464     Kyungtae Kim reported a race condition in the USB core     that can result in a use-after-free. It is not clear how     this can be exploited, but it could result in a denial     of service (crash or memory corruption) or privilege     escalation.

  - CVE-2020-12652     Tom Hatskevich reported a bug in the mptfusion storage     drivers. An ioctl handler fetched a parameter from user     memory twice, creating a race condition which could     result in incorrect locking of internal data structures.
    A local user permitted to access /dev/mptctl could use     this to cause a denial of service (crash or memory     corruption) or for privilege escalation.

  - CVE-2020-12653     It was discovered that the mwifiex WiFi driver did not     sufficiently validate scan requests, resulting a     potential heap buffer overflow. A local user with     CAP_NET_ADMIN capability could use this to cause a     denial of service (crash or memory corruption) or     possibly for privilege escalation.

  - CVE-2020-12654     It was discovered that the mwifiex WiFi driver did not     sufficiently validate WMM parameters received from an     access point (AP), resulting a potential heap buffer     overflow. A malicious AP could use this to cause a     denial of service (crash or memory corruption) or     possibly to execute code on a vulnerable system.

  - CVE-2020-12770     It was discovered that the sg (SCSI generic) driver did     not correctly release internal resources in a particular     error case. A local user permitted to access an sg     device could possibly use this to cause a denial of     service (resource exhaustion).

  - CVE-2020-13143     Kyungtae Kim reported a potential heap out-of-bounds     write in the USB gadget subsystem. A local user     permitted to write to the gadget configuration     filesystem could use this to cause a denial of service     (crash or memory corruption) or potentially for     privilege escalation.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-2082 advisory.

    - [net] netlabel: cope with NULL catmap (Paolo Abeni) [1827239 1827240] {CVE-2020-10711}
    - [kernel] blktrace: fix dereference after null check (Ming Lei) [1806367 1798318] {CVE-2019-19768}
    - [kernel] blktrace: Protect q->blk_trace with RCU (Ming Lei) [1806367 1798318] {CVE-2019-19768}
    - [kernel] blktrace: fix trace mutex deadlock (Ming Lei) [1806367 1798318] {CVE-2019-19768}
    - [kernel] blktrace: fix unlocked registration of tracepoints (Ming Lei) [1806367 1798318]     {CVE-2019-19768}
    - [kernel] blktrace: fix unlocked access to init/start-stop/teardown (Ming Lei) [1806367 1798318]     {CVE-2019-19768}
    - [kernel] tracing: Fix possible double free on failure of allocating trace buffer (Jerome Marchand)     [1803010 1803011] {CVE-2017-18595}
    - [kernel] tracing: Fix crash when it fails to alloc ring buffer (Jerome Marchand) [1803010 1803011]     {CVE-2017-18595}

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2085 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c     (CVE-2017-18595)

    * kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

    * Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause     kernel panic (CVE-2020-10711)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * kernel-rt: update to the RHEL7.8.z batch#1 source tree (BZ#1812282)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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

CVE-2019-2182

Hanjun Guo and Lei Li reported a race condition in the arm64 virtual memory management code, which could lead to an information disclosure, denial of service (crash), or possibly privilege escalation.

CVE-2019-5108

Mitchell Frank of Cisco discovered that when the IEEE 802.11 (WiFi) stack was used in AP mode with roaming, it would trigger roaming for a newly associated station before the station was authenticated. An attacker within range of the AP could use this to cause a denial of service, either by filling up a switching table or by redirecting traffic away from other stations.

CVE-2019-19319

Jungyeon discovered that a crafted filesystem can cause the ext4 implementation to deallocate or reallocate journal blocks. A user permitted to mount filesystems could use this to cause a denial of service (crash), or possibly for privilege escalation.

CVE-2019-19462

The syzbot tool found a missing error check in the 'relay' library used to implement various files under debugfs. A local user permitted to access debugfs could use this to cause a denial of service (crash) or possibly for privilege escalation.

CVE-2019-19768

Tristan Madani reported a race condition in the blktrace debug facility that could result in a use-after-free. A local user able to trigger removal of block devices could possibly use this to cause a denial of service (crash) or for privilege escalation.

CVE-2019-20806

A potential NULL pointer dereference was discovered in the tw5864 media driver. The security impact of this is unclear.

CVE-2019-20811

The Hulk Robot tool found a reference-counting bug in an error path in the network subsystem. The security impact of this is unclear.

CVE-2020-0543

Researchers at VU Amsterdam discovered that on some Intel CPUs supporting the RDRAND and RDSEED instructions, part of a random value generated by these instructions may be used in a later speculative execution on any core of the same physical CPU. Depending on how these instructions are used by applications, a local user or VM guest could use this to obtain sensitive information such as cryptographic keys from other users or VMs.

This vulnerability can be mitigated by a microcode update, either as part of system firmware (BIOS) or through the intel-microcode package in Debian's non-free archive section. This kernel update only provides reporting of the vulnerability and the option to disable the mitigation if it is not needed.

CVE-2020-2732

Paulo Bonzini discovered that the KVM implementation for Intel processors did not properly handle instruction emulation for L2 guests when nested virtualization is enabled. This could allow an L2 guest to cause privilege escalation, denial of service, or information leaks in the L1 guest.

CVE-2020-8428

Al Viro discovered a potential use-after-free in the filesystem core (vfs). A local user could exploit this to cause a denial of service (crash) or possibly to obtain sensitive information from the kernel.

CVE-2020-8647, CVE-2020-8649

The Hulk Robot tool found a potential MMIO out-of-bounds access in the vgacon driver. A local user permitted to access a virtual terminal (/dev/tty1 etc.) on a system using the vgacon driver could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

CVE-2020-8648

The syzbot tool found a race condition in the the virtual terminal driver, which could result in a use-after-free. A local user permitted to access a virtual terminal could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

CVE-2020-9383

Jordy Zomer reported an incorrect range check in the floppy driver which could lead to a static out-of-bounds access. A local user permitted to access a floppy drive could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

CVE-2020-10711

Matthew Sheets reported NULL pointer dereference issues in the SELinux subsystem while receiving CIPSO packet with null category. A remote attacker can take advantage of this flaw to cause a denial of service (crash). Note that this issue does not affect the binary packages distributed in Debian as CONFIG_NETLABEL is not enabled.

CVE-2020-10732

An information leak of kernel private memory to userspace was found in the kernel's implementation of core dumping userspace processes.

CVE-2020-10751

Dmitry Vyukov reported that the SELinux subsystem did not properly handle validating multiple messages, which could allow a privileged attacker to bypass SELinux netlink restrictions.

CVE-2020-10757

Fan Yang reported a flaw in the way mremap handled DAX hugepages, allowing a local user to escalate their privileges

CVE-2020-10942

It was discovered that the vhost_net driver did not properly validate the type of sockets set as back-ends. A local user permitted to access /dev/vhost-net could use this to cause a stack corruption via crafted system calls, resulting in denial of service (crash) or possibly privilege escalation.

CVE-2020-11494

It was discovered that the slcan (serial line CAN) network driver did not fully initialise CAN headers for received packets, resulting in an information leak from the kernel to user-space or over the CAN network.

CVE-2020-11565

Entropy Moe reported that the shared memory filesystem (tmpfs) did not correctly handle an 'mpol' mount option specifying an empty node list, leading to a stack-based out-of-bounds write. If user namespaces are enabled, a local user could use this to cause a denial of service (crash) or possibly for privilege escalation.

CVE-2020-11608, CVE-2020-11609, CVE-2020-11668

It was discovered that the ov519, stv06xx, and xirlink_cit media drivers did not properly validate USB device descriptors. A physically present user with a specially constructed USB device could use this to cause a denial of service (crash) or possibly for privilege escalation.

CVE-2020-12114

Piotr Krysiuk discovered a race condition between the umount and pivot_root operations in the filesystem core (vfs). A local user with the CAP_SYS_ADMIN capability in any user namespace could use this to cause a denial of service (crash).

CVE-2020-12464

Kyungtae Kim reported a race condition in the USB core that can result in a use-after-free. It is not clear how this can be exploited, but it could result in a denial of service (crash or memory corruption) or privilege escalation.

CVE-2020-12652

Tom Hatskevich reported a bug in the mptfusion storage drivers. An ioctl handler fetched a parameter from user memory twice, creating a race condition which could result in incorrect locking of internal data structures. A local user permitted to access /dev/mptctl could use this to cause a denial of service (crash or memory corruption) or for privilege escalation.

CVE-2020-12653

It was discovered that the mwifiex WiFi driver did not sufficiently validate scan requests, resulting a potential heap buffer overflow. A local user with CAP_NET_ADMIN capability could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

CVE-2020-12654

It was discovered that the mwifiex WiFi driver did not sufficiently validate WMM parameters received from an access point (AP), resulting a potential heap buffer overflow. A malicious AP could use this to cause a denial of service (crash or memory corruption) or possibly to execute code on a vulnerable system.

CVE-2020-12770

It was discovered that the sg (SCSI generic) driver did not correctly release internal resources in a particular error case. A local user permitted to access an sg device could possibly use this to cause a denial of service (resource exhaustion).

CVE-2020-13143

Kyungtae Kim reported a potential heap out-of-bounds write in the USB gadget subsystem. A local user permitted to write to the gadget configuration filesystem could use this to cause a denial of service (crash or memory corruption) or potentially for privilege escalation.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.210-1+deb9u1~deb8u1. This version also fixes some related bugs that do not have their own CVE IDs, and a regression in the macvlan driver introduced in the previous security update (bug #952660).

We recommend that you upgrade your linux-4.9 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14354-1 advisory.

  - ** DISPUTED ** An issue was discovered in the MPT3COMMAND case in _ctl_ioctl_main in     drivers/scsi/mpt3sas/mpt3sas_ctl.c in the Linux kernel through 5.1.5. It allows local users to cause a     denial of service or possibly have unspecified other impact by changing the value of ioc_number between     two kernel reads of that value, aka a double fetch vulnerability. NOTE: a third party reports that this     is unexploitable because the doubly fetched value is not used. (CVE-2019-12456)

  - A heap-based buffer overflow vulnerability was found in the Linux kernel, version kernel-2.6.32, in     Marvell WiFi chip driver. A remote attacker could cause a denial of service (system crash) or, possibly     execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP.
    (CVE-2019-14896)

  - A stack-based buffer overflow was found in the Linux kernel, version kernel-2.6.32, in Marvell WiFi chip     driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary     code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and     connects to another STA. (CVE-2019-14897)

  - An issue was discovered in the Linux kernel before 5.2.3. There is a use-after-free caused by a malicious     USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver. (CVE-2019-15213)

  - An issue was discovered in the Linux kernel before 5.0.1. There is a memory leak in     register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service. (CVE-2019-15916)

  - The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is     not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to     arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c. (CVE-2019-18660)

  - The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in     drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local     users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can     possibly result in a privilege escalation. (CVE-2019-18675)

  - A memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     bfa_port_get_stats() failures, aka CID-0e62395da2bd. (CVE-2019-19066)

  - Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel through 5.3.11 allow     attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout()     failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the     htc_connect_service() function, aka CID-853acf7caf10. (CVE-2019-19073)

  - A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.
    (CVE-2019-19074)

  - In the AppleTalk subsystem in the Linux kernel before 5.1, there is a potential NULL pointer dereference     because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c     and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122. (CVE-2019-19227)

  - In the Linux kernel before 5.3.7, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79. (CVE-2019-19523)

  - In the Linux kernel before 5.3.12, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9. (CVE-2019-19524)

  - In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/hid/usbhid/hiddev.c driver, aka CID-9c09b214f30e. (CVE-2019-19527)

  - In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/class/cdc-acm.c driver, aka CID-c52873e5a1ef. (CVE-2019-19530)

  - In the Linux kernel before 5.2.9, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/misc/yurex.c driver, aka CID-fc05481b2fca. (CVE-2019-19531)

  - In the Linux kernel before 5.3.9, there are multiple out-of-bounds write bugs that can be caused by a     malicious USB device in the Linux kernel HID drivers, aka CID-d9d4b1e46d95. This affects drivers/hid/hid-     axff.c, drivers/hid/hid-dr.c, drivers/hid/hid-emsff.c, drivers/hid/hid-gaff.c, drivers/hid/hid-holtekff.c,     drivers/hid/hid-lg2ff.c, drivers/hid/hid-lg3ff.c, drivers/hid/hid-lg4ff.c, drivers/hid/hid-lgff.c,     drivers/hid/hid-logitech-hidpp.c, drivers/hid/hid-microsoft.c, drivers/hid/hid-sony.c, drivers/hid/hid-     tmff.c, and drivers/hid/hid-zpff.c. (CVE-2019-19532)

  - In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB     device in the USB character device driver layer, aka CID-303911cfc5b9. This affects     drivers/usb/core/file.c. (CVE-2019-19537)

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - In the Linux kernel through 5.4.6, there is a NULL pointer dereference in     drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related     to a PHY down race condition, aka CID-f70267f379b5. (CVE-2019-19965)

  - In the Linux kernel before 5.1.6, there is a use-after-free in cpia2_exit() in     drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service, aka CID-dea37a972655.
    (CVE-2019-19966)

  - In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which     may cause denial of service, aka CID-1d3ff0950e2b. (CVE-2019-20096)

  - In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family     field, which might allow attackers to trigger kernel stack corruption via crafted system calls.
    (CVE-2020-10942)

  - An issue was discovered in the Linux kernel before 5.6.1. drivers/media/usb/gspca/ov519.c allows NULL     pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints, aka     CID-998912346c0d. (CVE-2020-11608)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in     drivers/tty/vt/vt.c. (CVE-2020-8647)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common     function in drivers/tty/n_tty.c. (CVE-2020-8648)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region     function in drivers/video/console/vgacon.c. (CVE-2020-8649)

  - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to     a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it,     aka CID-2e90ca68b0d2. (CVE-2020-9383)

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1769 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

    * kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)

    * kernel: memory leak in the kernel_read_file function in fs/exec.c allows to cause a denial of service     (CVE-2019-8980)

    * kernel: unprivileged users able to create RAW sockets  in AF_IEEE802154 network protocol.
    (CVE-2019-17053)

    * kernel: unprivileged users able to create RAW sockets in AF_ISDN  network protocol. (CVE-2019-17055)

    * kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c (CVE-2019-18805)

    * kernel: information leak bug caused  by a malicious USB device in the     drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (CVE-2019-19534)

    * kernel: some ipv6 protocols not encrypted over ipsec tunnel. (CVE-2020-1749)

    * Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR     (CVE-2019-10639)

    * kernel: An out-of-bounds read in drivers/scsi/qedi/qedi_dbg.c leading to crash or information disclosure     (CVE-2019-15090)

    * kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash     (CVE-2019-15099)

    * kernel: Null pointer dereference in the sound/usb/line6/pcm.c (CVE-2019-15221)

    * kernel: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in     drivers/net/wireless/marvell/mwifiex/pcie.c allows for a DoS (CVE-2019-19057)

    * kernel: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel (DOS)     (CVE-2019-19073)

    * kernel: a memory leak in the ath9k management function in allows local DoS (CVE-2019-19074)

    * kernel: when cpu.cfs_quota_us is used allows attackers to cause a denial of service against non-cpu-     bound applications (CVE-2019-19922)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    This update also fixes several bugs and adds various enhancements. Documentation for these changes is     available from the Release Notes document linked to in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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	Published	Updated	Severity
143889	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2020-0073)	Nessus	NewStart CGSL Local Security Checks	12/9/2020	12/10/2020	high
170327	RHEL 7 : kpatch-patch (RHSA-2020:2519)	Nessus	Red Hat Local Security Checks	1/23/2023	11/7/2024	high
208643	CentOS 7 : kernel-alt (RHSA-2020:2104)	Nessus	CentOS Local Security Checks	10/9/2024	10/9/2024	high
170357	RHEL 7 : kpatch-patch (RHSA-2020:2291)	Nessus	Red Hat Local Security Checks	1/23/2023	11/7/2024	high
136166	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1142-1)	Nessus	SuSE Local Security Checks	4/30/2020	3/14/2024	high
136026	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1119-1)	Nessus	SuSE Local Security Checks	4/28/2020	3/14/2024	high
137340	Debian DSA-4698-1 : linux - security update	Nessus	Debian Local Security Checks	6/11/2020	3/7/2024	high
136645	Oracle Linux 7 : kernel (ELSA-2020-2082)	Nessus	Oracle Linux Local Security Checks	5/15/2020	10/22/2024	high
136525	RHEL 7 : kernel-rt (RHSA-2020:2085)	Nessus	Red Hat Local Security Checks	5/12/2020	11/7/2024	high
137339	Debian DLA-2242-1 : linux-4.9 security update	Nessus	Debian Local Security Checks	6/11/2020	3/7/2024	high
150557	SUSE SLES11 Security Update : kernel (SUSE-SU-2020:14354-1)	Nessus	SuSE Local Security Checks	6/10/2021	12/26/2023	critical
136115	RHEL 8 : kernel (RHSA-2020:1769)	Nessus	Red Hat Local Security Checks	4/29/2020	11/7/2024	critical

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