CWE
416 476 362
Advisory Published

USN-6312-1: Linux kernel vulnerabilities

First published: Mon Aug 28 2023(Updated: )

It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service (infinite recursion). (CVE-2020-36691) Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl() in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-0168) It was discovered that the ext4 file system implementation in the Linux kernel contained a use-after-free vulnerability. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2022-1184) It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672) William Zhao discovered that the Traffic Control (TC) subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2022-4269) It was discovered that a race condition existed in the qdisc 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-2023-0590) It was discovered that a race condition existed in the btrfs file system 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 expose sensitive information. (CVE-2023-1611) It was discovered that the APM X-Gene SoC hardware monitoring driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2023-1855) It was discovered that the ST NCI NFC driver did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2023-1990) It was discovered that the XFS file system implementation in the Linux kernel did not properly perform metadata validation when mounting certain images. An attacker could use this to specially craft a file system image that, when mounted, could cause a denial of service (system crash). (CVE-2023-2124) It was discovered that the SLIMpro I2C device driver in the Linux kernel did not properly validate user-supplied data in some situations, leading to an out-of-bounds write vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-2194) It was discovered that a race condition existed in the TLS subsystem in the Linux kernel, leading to a use-after-free or a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-28466) It was discovered that the DA9150 charger driver in the Linux kernel did not properly handle device removal, leading to a user-after free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-30772) It was discovered that the btrfs file system implementation in the Linux kernel did not properly handle error conditions in some situations, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-3111) It was discovered that the Ricoh R5C592 MemoryStick card reader driver in the Linux kernel contained a race condition during module unload, 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-2023-3141) It was discovered that the Qualcomm EMAC ethernet driver in the Linux kernel did not properly handle device removal, leading to a user-after free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-33203)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-1105-gke<5.4.0-1105.112
5.4.0-1105.112
=20.04
All of
ubuntu/linux-image-gke<5.4.0.1105.110
5.4.0.1105.110
=20.04
All of
ubuntu/linux-image-gke-5.4<5.4.0.1105.110
5.4.0.1105.110
=20.04
All of
ubuntu/linux-image-5.4.0-1054-ibm<5.4.0-1054.59~18.04.1
5.4.0-1054.59~18.04.1
=18.04
All of
ubuntu/linux-image-ibm<5.4.0.1054.65
5.4.0.1054.65
=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 CVE-2020-36691.

  • What is the impact of the CVE-2020-36691 vulnerability?

    The CVE-2020-36691 vulnerability can be exploited by an attacker to cause a denial of service (infinite recursion).

  • How can I fix the CVE-2020-36691 vulnerability?

    To fix the CVE-2020-36691 vulnerability, you should update the Linux kernel to version 5.4.0-1105.112 or later.

  • What is the affected software?

    The affected software is Ubuntu Linux with Linux kernel versions 5.4.0-1105.112 and earlier.

  • Are there any known exploits for CVE-2020-36691?

    No known exploits for CVE-2020-36691 have been reported at this time.

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