CWE
416 362
Advisory Published

USN-5728-2: Linux kernel vulnerabilities

First published: Fri Nov 18 2022(Updated: )

Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703) It was discovered that a race condition existed in the memory address space accounting implementation in the Linux kernel, 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-2022-41222) It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-20422) It was discovered that the KVM implementation in the Linux kernel did not properly handle virtual CPUs without APICs in certain situations. A local attacker could possibly use this to cause a denial of service (host system crash). (CVE-2022-2153) Hao Sun and Jiacheng Xu discovered that the NILFS file system implementation in the Linux kernel contained 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-2022-2978) Johannes Wikner and Kaveh Razavi discovered that for some Intel x86-64 processors, the Linux kernel's protections against speculative branch target injection attacks were insufficient in some circumstances. A local attacker could possibly use this to expose sensitive information. (CVE-2022-29901) Abhishek Shah discovered a race condition in the PF_KEYv2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-3028) It was discovered that the Netlink device interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a use-after-free vulnerability with some network device drivers. A local attacker with admin access to the network device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3625) It was discovered that the IDT 77252 ATM PCI device driver in the Linux kernel did not properly remove any pending timers during device exit, resulting in a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-3635) Xingyuan Mo and Gengjia Chen discovered that the Promise SuperTrak EX storage controller driver in the Linux kernel did not properly handle certain structures. A local attacker could potentially use this to expose sensitive information (kernel memory). (CVE-2022-40768) Sönke Huster discovered that a use-after-free vulnerability existed in the WiFi driver stack in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42719)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-gkeop-5.4<5.4.0.1057.57
5.4.0.1057.57
=20.04
All of
ubuntu/linux-image-gke<5.4.0.1087.94
5.4.0.1087.94
=20.04
All of
ubuntu/linux-image-azure-fde<5.4.0.1095.101+cvm1.33
5.4.0.1095.101+cvm1.33
=20.04
All of
ubuntu/linux-image-5.4.0-1087-gke<5.4.0-1087.94
5.4.0-1087.94
=20.04
All of
ubuntu/linux-image-5.4.0-1057-gkeop<5.4.0-1057.61
5.4.0-1057.61
=20.04
All of
ubuntu/linux-image-gkeop<5.4.0.1057.57
5.4.0.1057.57
=20.04
All of
ubuntu/linux-image-gke-5.4<5.4.0.1087.94
5.4.0.1087.94
=20.04
All of
ubuntu/linux-image-5.4.0-1095-azure-fde<5.4.0-1095.101+cvm1.1
5.4.0-1095.101+cvm1.1
=20.04
All of
ubuntu/linux-image-5.4.0-1074-raspi<5.4.0-1074.85~18.04.1
5.4.0-1074.85~18.04.1
=18.04
All of
ubuntu/linux-image-raspi-hwe-18.04<5.4.0.1074.73
5.4.0.1074.73
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this advisory?

    The vulnerability ID for this advisory is USN-5728-2.

  • What is the description of the vulnerability?

    The vulnerability is related to the Linux kernel not properly tracking memory allocations for anonymous VMA mappings, which can lead to a denial of service or possible execution of arbitrary code.

  • How can a local attacker exploit this vulnerability?

    A local attacker can exploit this vulnerability by causing a system crash or executing arbitrary code.

  • Which versions of Ubuntu are affected by this vulnerability?

    Versions of Ubuntu 20.04 and 18.04 are affected by this vulnerability.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability at the following references: [CVE-2022-42703](https://ubuntu.com/security/CVE-2022-42703), [CVE-2022-20422](https://ubuntu.com/security/CVE-2022-20422), [CVE-2022-29901](https://ubuntu.com/security/CVE-2022-29901).

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