In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is never waited upon the matching event release. In the case of a child event, released via free_event() directly, this can potentially result in a leaked event, such as in the following scenario that doesn't even require a weak IRQ work implementation to trigger: schedule() prepare_task_switch() =======> <NMI> perf_event_overflow() event->pending_sigtrap = ... irq_work_queue(&event->pending_irq) <======= </NMI> perf_event_task_sched_out() event_sched_out() event->pending_sigtrap = 0; atomic_long_inc_not_zero(&event->refcount) task_work_add(&event->pending_task) finish_lock_switch() =======> <IRQ> perf_pending_irq() //do nothing, rely on pending task work <======= </IRQ> begin_new_exec() perf_event_exit_task() perf_event_exit_event() // If is child event free_event() WARN(atomic_long_cmpxchg(&event->refcount, 1, 0) != 1) // event is leaked Similar scenarios can also happen with perf_event_remove_on_exec() or simply against concurrent perf_event_release(). Fix this with synchonizing against the possibly remaining pending task work while freeing the event, just like is done with remaining pending IRQ work. This means that the pending task callback neither need nor should hold a reference to the event, preventing it from ever beeing freed.

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7100-2 advisory.

    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:

    - ARM64 architecture;

    - MIPS architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - User-Mode Linux (UML);

    - x86 architecture;

    - Block layer subsystem;

    - Android drivers;

    - Serial ATA and Parallel ATA drivers;

    - ATM drivers;

    - Drivers core;

    - Null block device driver;

    - Character device driver;

    - ARM SCMI message protocol;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - I3C subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Miscellaneous) drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - ISDN/mISDN subsystem;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - VMware VMCI Driver;

    - MMC subsystem;

    - Network drivers;

    - Near Field Communication (NFC) drivers;

    - NVME drivers;

    - Device tree and open firmware driver;

    - Parport drivers;

    - PCI subsystem;

    - Pin controllers subsystem;

    - Remote Processor subsystem;

    - S/390 drivers;

    - SCSI drivers;

    - QCOM SoC drivers;

    - Direct Digital Synthesis drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - DesignWare USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB Type-C Connector System Software Interface driver;

    - USB over IP driver;

    - VHOST drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - Ext4 file system;

    - F2FS file system;

    - JFS file system;

    - NILFS2 file system;

    - NTFS3 file system;

    - Proc file system;

    - SMB network file system;

    - Core kernel;

    - DMA mapping infrastructure;

    - RCU subsystem;

    - Tracing infrastructure;

    - Radix Tree data structure library;

    - Kernel userspace event delivery library;

    - Objagg library;

    - Memory management;

    - Amateur Radio drivers;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAN network layer;

    - Networking core;

    - Ethtool driver;

    - IPv4 networking;

    - IPv6 networking;

    - IUCV driver;

    - KCM (Kernel Connection Multiplexor) sockets driver;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Netfilter;

    - Network traffic control;

    - SCTP protocol;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - Wireless networking;

    - AppArmor security module;

    - Landlock security;

    - Simplified Mandatory Access Control Kernel framework;

    - FireWire sound drivers;

    - SoC audio core drivers;

    - USB sound devices; (CVE-2024-42288, CVE-2024-41098, CVE-2024-43849, CVE-2024-46689, CVE-2024-44987,     CVE-2024-40915, CVE-2024-46844, CVE-2024-45009, CVE-2024-46780, CVE-2024-41081, CVE-2024-43817,     CVE-2024-44965, CVE-2024-46832, CVE-2024-41072, CVE-2024-45011, CVE-2024-46814, CVE-2024-45026,     CVE-2024-44982, CVE-2024-46723, CVE-2024-46771, CVE-2024-46759, CVE-2024-41063, CVE-2024-46673,     CVE-2023-52889, CVE-2024-41020, CVE-2024-46677, CVE-2024-46798, CVE-2024-45021, CVE-2024-46676,     CVE-2024-47668, CVE-2024-42289, CVE-2024-45018, CVE-2024-46724, CVE-2024-41090, CVE-2024-43853,     CVE-2024-42272, CVE-2024-43828, CVE-2024-42292, CVE-2024-26800, CVE-2024-43871, CVE-2024-46758,     CVE-2024-36484, CVE-2024-46755, CVE-2024-46782, CVE-2024-43889, CVE-2024-46763, CVE-2024-41015,     CVE-2024-43858, CVE-2024-41012, CVE-2024-44960, CVE-2024-46747, CVE-2024-42311, CVE-2024-47660,     CVE-2024-42267, CVE-2024-44998, CVE-2024-43839, CVE-2024-43914, CVE-2024-46783, CVE-2024-47659,     CVE-2024-46725, CVE-2024-46840, CVE-2024-43873, CVE-2024-46737, CVE-2024-44946, CVE-2024-43841,     CVE-2024-26669, CVE-2024-42306, CVE-2024-26661, CVE-2024-42259, CVE-2024-41011, CVE-2024-46822,     CVE-2024-42287, CVE-2024-46746, CVE-2024-43860, CVE-2024-42246, CVE-2024-46800, CVE-2024-45007,     CVE-2024-42296, CVE-2024-47669, CVE-2024-44983, CVE-2024-43880, CVE-2024-42284, CVE-2022-48666,     CVE-2024-44990, CVE-2024-43894, CVE-2024-44989, CVE-2023-52918, CVE-2024-42295, CVE-2024-43869,     CVE-2024-42277, CVE-2024-46818, CVE-2024-42270, CVE-2024-45025, CVE-2024-42301, CVE-2024-43883,     CVE-2024-46714, CVE-2024-46815, CVE-2024-41073, CVE-2024-43905, CVE-2024-43882, CVE-2024-46719,     CVE-2024-42286, CVE-2024-44952, CVE-2024-42297, CVE-2024-41022, CVE-2024-46743, CVE-2024-43829,     CVE-2024-43909, CVE-2024-42265, CVE-2024-44944, CVE-2024-46807, CVE-2024-46739, CVE-2024-43867,     CVE-2024-44958, CVE-2024-44969, CVE-2024-42271, CVE-2024-46745, CVE-2024-42299, CVE-2024-45006,     CVE-2024-43908, CVE-2024-44966, CVE-2024-41065, CVE-2024-46777, CVE-2024-42309, CVE-2024-38602,     CVE-2024-44947, CVE-2024-43884, CVE-2024-43902, CVE-2024-47667, CVE-2024-46750, CVE-2024-41070,     CVE-2024-26893, CVE-2024-41017, CVE-2024-46810, CVE-2024-46828, CVE-2024-43893, CVE-2024-41077,     CVE-2024-46756, CVE-2024-46740, CVE-2024-42269, CVE-2024-43890, CVE-2024-45008, CVE-2024-46795,     CVE-2024-43854, CVE-2024-46713, CVE-2024-47663, CVE-2024-46702, CVE-2024-46781, CVE-2024-46722,     CVE-2024-42114, CVE-2024-44948, CVE-2024-44988, CVE-2024-42302, CVE-2024-41019, CVE-2024-46731,     CVE-2024-46819, CVE-2024-44995, CVE-2024-41059, CVE-2024-43856, CVE-2024-44954, CVE-2024-43863,     CVE-2024-38577, CVE-2024-43870, CVE-2024-41068, CVE-2024-41071, CVE-2024-38611, CVE-2024-46761,     CVE-2024-42304, CVE-2024-42310, CVE-2024-46707, CVE-2024-42290, CVE-2024-42276, CVE-2024-44935,     CVE-2024-46721, CVE-2024-46817, CVE-2024-46791, CVE-2024-44934, CVE-2024-45028, CVE-2024-46757,     CVE-2024-43879, CVE-2024-43907, CVE-2024-43846, CVE-2024-42280, CVE-2024-44999, CVE-2024-43861,     CVE-2024-42126, CVE-2024-26607, CVE-2024-46752, CVE-2024-42305, CVE-2024-43835, CVE-2024-41042,     CVE-2024-46675, CVE-2024-46804, CVE-2024-41091, CVE-2024-41060, CVE-2024-46744, CVE-2024-47665,     CVE-2024-39472, CVE-2024-46829, CVE-2024-42285, CVE-2024-42281, CVE-2024-43830, CVE-2024-42274,     CVE-2024-46679, CVE-2024-44985, CVE-2024-46805, CVE-2024-42312, CVE-2024-42283, CVE-2024-45003,     CVE-2024-44971, CVE-2024-42313, CVE-2024-46685, CVE-2024-46738, CVE-2024-44986, CVE-2024-43834,     CVE-2024-46732, CVE-2024-43875, CVE-2024-42318, CVE-2024-41064, CVE-2024-44974, CVE-2024-43892,     CVE-2024-41078)

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 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7100-1 advisory.

    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:

    - ARM64 architecture;

    - MIPS architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - User-Mode Linux (UML);

    - x86 architecture;

    - Block layer subsystem;

    - Android drivers;

    - Serial ATA and Parallel ATA drivers;

    - ATM drivers;

    - Drivers core;

    - Null block device driver;

    - Character device driver;

    - ARM SCMI message protocol;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - I3C subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Miscellaneous) drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - ISDN/mISDN subsystem;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - VMware VMCI Driver;

    - MMC subsystem;

    - Network drivers;

    - Near Field Communication (NFC) drivers;

    - NVME drivers;

    - Device tree and open firmware driver;

    - Parport drivers;

    - PCI subsystem;

    - Pin controllers subsystem;

    - Remote Processor subsystem;

    - S/390 drivers;

    - SCSI drivers;

    - QCOM SoC drivers;

    - Direct Digital Synthesis drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - DesignWare USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB Type-C Connector System Software Interface driver;

    - USB over IP driver;

    - VHOST drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - Ext4 file system;

    - F2FS file system;

    - JFS file system;

    - NILFS2 file system;

    - NTFS3 file system;

    - Proc file system;

    - SMB network file system;

    - Core kernel;

    - DMA mapping infrastructure;

    - RCU subsystem;

    - Tracing infrastructure;

    - Radix Tree data structure library;

    - Kernel userspace event delivery library;

    - Objagg library;

    - Memory management;

    - Amateur Radio drivers;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAN network layer;

    - Networking core;

    - Ethtool driver;

    - IPv4 networking;

    - IPv6 networking;

    - IUCV driver;

    - KCM (Kernel Connection Multiplexor) sockets driver;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Netfilter;

    - Network traffic control;

    - SCTP protocol;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - Wireless networking;

    - AppArmor security module;

    - Landlock security;

    - Simplified Mandatory Access Control Kernel framework;

    - FireWire sound drivers;

    - SoC audio core drivers;

    - USB sound devices; (CVE-2024-43817, CVE-2024-42304, CVE-2024-46756, CVE-2024-42318, CVE-2024-41090,     CVE-2024-41063, CVE-2024-44987, CVE-2024-46844, CVE-2024-46677, CVE-2024-44988, CVE-2024-42297,     CVE-2024-26893, CVE-2024-46673, CVE-2024-26800, CVE-2024-42305, CVE-2024-46731, CVE-2024-41091,     CVE-2024-46810, CVE-2024-41072, CVE-2022-48666, CVE-2024-38602, CVE-2024-46780, CVE-2024-46750,     CVE-2024-43858, CVE-2024-41020, CVE-2024-46755, CVE-2024-46829, CVE-2024-41068, CVE-2024-45003,     CVE-2024-42280, CVE-2024-42283, CVE-2024-43873, CVE-2024-46746, CVE-2024-44969, CVE-2024-46807,     CVE-2024-41081, CVE-2024-44971, CVE-2024-26607, CVE-2024-43880, CVE-2024-42281, CVE-2024-42274,     CVE-2024-43908, CVE-2024-42267, CVE-2024-47665, CVE-2024-45011, CVE-2024-46707, CVE-2024-42310,     CVE-2024-42309, CVE-2024-44965, CVE-2024-46747, CVE-2024-42259, CVE-2024-46804, CVE-2024-46679,     CVE-2024-45007, CVE-2024-45009, CVE-2024-46771, CVE-2024-46739, CVE-2024-41060, CVE-2024-46676,     CVE-2024-46822, CVE-2024-42272, CVE-2024-41059, CVE-2024-43839, CVE-2024-46817, CVE-2024-47669,     CVE-2024-44999, CVE-2024-42285, CVE-2024-44986, CVE-2024-43828, CVE-2024-43879, CVE-2024-44998,     CVE-2024-46724, CVE-2024-41015, CVE-2024-45025, CVE-2024-43849, CVE-2024-46818, CVE-2024-43830,     CVE-2024-46725, CVE-2024-43834, CVE-2024-42302, CVE-2024-36484, CVE-2024-43853, CVE-2024-46782,     CVE-2024-46740, CVE-2024-46732, CVE-2024-43869, CVE-2024-42312, CVE-2024-42292, CVE-2024-43884,     CVE-2024-44934, CVE-2024-44995, CVE-2024-43894, CVE-2024-46675, CVE-2024-43870, CVE-2024-44990,     CVE-2024-42287, CVE-2024-41065, CVE-2024-42301, CVE-2024-42290, CVE-2024-46702, CVE-2024-46719,     CVE-2024-46745, CVE-2024-46758, CVE-2024-46757, CVE-2024-44935, CVE-2024-42276, CVE-2024-43890,     CVE-2023-52918, CVE-2024-41077, CVE-2024-43905, CVE-2024-38611, CVE-2024-42269, CVE-2024-42284,     CVE-2024-41073, CVE-2024-46722, CVE-2024-41017, CVE-2024-47667, CVE-2024-45021, CVE-2024-43867,     CVE-2024-41098, CVE-2024-43909, CVE-2024-46723, CVE-2024-45026, CVE-2024-42114, CVE-2024-44944,     CVE-2024-43835, CVE-2024-44982, CVE-2024-43907, CVE-2024-46828, CVE-2024-43856, CVE-2024-46832,     CVE-2024-44954, CVE-2024-43846, CVE-2024-41070, CVE-2024-43892, CVE-2024-44985, CVE-2024-42306,     CVE-2024-43889, CVE-2024-44958, CVE-2024-46798, CVE-2024-44989, CVE-2024-42313, CVE-2024-46737,     CVE-2024-42289, CVE-2024-43829, CVE-2024-46744, CVE-2023-52889, CVE-2024-46689, CVE-2024-47663,     CVE-2024-46791, CVE-2024-43863, CVE-2024-43893, CVE-2024-43841, CVE-2024-46777, CVE-2024-46800,     CVE-2024-45028, CVE-2024-44952, CVE-2024-43883, CVE-2024-44946, CVE-2024-43882, CVE-2024-44960,     CVE-2024-38577, CVE-2024-46814, CVE-2024-42288, CVE-2024-44947, CVE-2024-41071, CVE-2024-41042,     CVE-2024-41064, CVE-2024-42311, CVE-2024-42270, CVE-2024-43861, CVE-2024-46752, CVE-2024-42296,     CVE-2024-41022, CVE-2024-42246, CVE-2024-43871, CVE-2024-42265, CVE-2024-43854, CVE-2024-41019,     CVE-2024-46815, CVE-2024-46743, CVE-2024-42126, CVE-2024-26661, CVE-2024-41012, CVE-2024-46761,     CVE-2024-45008, CVE-2024-46805, CVE-2024-45006, CVE-2024-42295, CVE-2024-46783, CVE-2024-42286,     CVE-2024-46714, CVE-2024-42299, CVE-2024-46781, CVE-2024-43914, CVE-2024-44966, CVE-2024-44974,     CVE-2024-45018, CVE-2024-46840, CVE-2024-46819, CVE-2024-40915, CVE-2024-46759, CVE-2024-43860,     CVE-2024-47668, CVE-2024-39472, CVE-2024-47660, CVE-2024-47659, CVE-2024-46795, CVE-2024-43875,     CVE-2024-46738, CVE-2024-42271, CVE-2024-26669, CVE-2024-44983, CVE-2024-41078, CVE-2024-46685,     CVE-2024-46713, CVE-2024-46721, CVE-2024-46763, CVE-2024-41011, CVE-2024-43902, CVE-2024-42277,     CVE-2024-44948)

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 version of kernel installed on the remote host is prior to 5.15.165-110.161. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2024-051 advisory.

    2024-09-26: CVE-2024-42302 was added to this advisory.

    2024-09-12: CVE-2024-43870 was added to this advisory.

    2024-09-12: CVE-2024-44934 was added to this advisory.

    2024-09-12: CVE-2024-43869 was added to this advisory.

    2024-09-12: CVE-2024-43873 was added to this advisory.

    2024-09-12: CVE-2024-44944 was added to this advisory.

    2024-09-12: CVE-2024-43871 was added to this advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    tls: fix race between tx work scheduling and socket close

    Similarly to previous commit, the submitting thread (recvmsg/sendmsg)may exit as soon as the async crypto     handler calls complete().Reorder scheduling the work before calling complete().This seems more logical in     the first place, as it'sthe inverse order of what the submitting thread will do. (CVE-2024-26585)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: use timestamp to check for set element timeout (CVE-2024-27397)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915/gem: Fix Virtual Memory mapping boundaries calculation (CVE-2024-42259)

    In the Linux kernel, the following vulnerability has been resolved:

    PCI/DPC: Fix use-after-free on concurrent DPC and hot-removal (CVE-2024-42302)

    In the Linux kernel, the following vulnerability has been resolved:

    perf: Fix event leak upon exec and file release (CVE-2024-43869)

    In the Linux kernel, the following vulnerability has been resolved:

    perf: Fix event leak upon exit (CVE-2024-43870)

    In the Linux kernel, the following vulnerability has been resolved:

    devres: Fix memory leakage caused by driver API devm_free_percpu() (CVE-2024-43871)

    In the Linux kernel, the following vulnerability has been resolved:

    vhost/vsock: always initialize seqpacket_allow (CVE-2024-43873)

    In the Linux kernel, the following vulnerability has been resolved:

    net: bridge: mcast: wait for previous gc cycles when removing port (CVE-2024-44934)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ctnetlink: use helper function to calculate expect ID (CVE-2024-44944)

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

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-709 advisory.

    2024-10-10: CVE-2024-42302 was added to this advisory.

    2024-09-12: CVE-2024-44934 was added to this advisory.

    2024-09-12: CVE-2024-44944 was added to this advisory.

    2024-09-12: CVE-2024-42159 was added to this advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: mpi3mr: Sanitise num_phys (CVE-2024-42159)

    In the Linux kernel, the following vulnerability has been resolved:

    mm: huge_memory: use !CONFIG_64BIT to relax huge page alignment on 32 bit machines (CVE-2024-42258)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915/gem: Fix Virtual Memory mapping boundaries calculation (CVE-2024-42259)

    In the Linux kernel, the following vulnerability has been resolved:

    PCI/DPC: Fix use-after-free on concurrent DPC and hot-removal (CVE-2024-42302)

    In the Linux kernel, the following vulnerability has been resolved:

    perf: Fix event leak upon exec and file release (CVE-2024-43869)

    In the Linux kernel, the following vulnerability has been resolved:

    perf: Fix event leak upon exit (CVE-2024-43870)

    In the Linux kernel, the following vulnerability has been resolved:

    devres: Fix memory leakage caused by driver API devm_free_percpu() (CVE-2024-43871)

    In the Linux kernel, the following vulnerability has been resolved:

    vhost/vsock: always initialize seqpacket_allow (CVE-2024-43873)

    In the Linux kernel, the following vulnerability has been resolved:

    net: bridge: mcast: wait for previous gc cycles when removing port (CVE-2024-44934)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ctnetlink: use helper function to calculate expect ID (CVE-2024-44944)

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

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

An update of the linux package has been released.

ID	Name	Product	Family	Severity
210815	RHEL 9 : kernel (RHSA-2024:9315)	Nessus	Red Hat Local Security Checks	high
210775	Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-7100-2)	Nessus	Ubuntu Local Security Checks	high
210741	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-7100-1)	Nessus	Ubuntu Local Security Checks	high
206819	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2024-051)	Nessus	Amazon Linux Local Security Checks	high
206810	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2024-709)	Nessus	Amazon Linux Local Security Checks	high
206730	Photon OS 5.0: Linux PHSA-2024-5.0-0359	Nessus	PhotonOS Local Security Checks	high

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CVE-2024-43869

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high

high

high