CWE
119 190 416 476 362
Advisory Published

USN-5693-1: Linux kernel (OEM) vulnerabilities

First published: Wed Oct 19 2022(Updated: )

David Bouman and Billy Jheng Bing Jhong discovered that a race condition existed in the io_uring subsystem 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-2022-2602) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) 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) 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) 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 an integer overflow vulnerability existed in the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-41674) 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) Sönke Huster discovered that the WiFi driver stack in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42720) Sönke Huster discovered that the WiFi driver stack in the Linux kernel did not properly handle BSSID/SSID lists in some situations. A physically proximate attacker could use this to cause a denial of service (infinite loop). (CVE-2022-42721) Sönke Huster discovered that the WiFi driver stack in the Linux kernel contained a NULL pointer dereference vulnerability in certain situations. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-42722)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-oem-22.04<5.17.0.1020.19
5.17.0.1020.19
=22.04
All of
ubuntu/linux-image-oem-22.04a<5.17.0.1020.19
5.17.0.1020.19
=22.04
All of
ubuntu/linux-image-5.17.0-1020-oem<5.17.0-1020.21
5.17.0-1020.21
=22.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2022-2602?

    The severity of CVE-2022-2602 is high.

  • How does the race condition in the io_uring subsystem lead to the use-after-free vulnerability?

    The race condition in the io_uring subsystem allows a local attacker to manipulate certain memory operations, leading to a use-after-free vulnerability.

  • What can a local attacker do with the use-after-free vulnerability in the Linux kernel?

    A local attacker can cause a denial of service (system crash) or potentially execute arbitrary code using the use-after-free vulnerability.

  • Which versions of the Linux kernel are affected by these vulnerabilities?

    The vulnerabilities affect the Linux kernel versions 5.17.0.1020.19, 5.17.0.1020.19a, and 5.17.0-1020.21 for Ubuntu 22.04.

  • How can I fix the vulnerabilities in the Linux kernel?

    To fix the vulnerabilities, update the Linux kernel to version 5.17.0.1020.19 or later for Ubuntu 22.04.

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