CWE
119
Advisory Published

USN-6495-2: Linux kernel vulnerabilities

First published: Thu Nov 30 2023(Updated: )

Yu Hao discovered that the UBI driver in the Linux kernel did not properly check for MTD with zero erasesize during device attachment. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-31085) Manfred Rudigier discovered that the Intel(R) PCI-Express Gigabit (igb) Ethernet driver in the Linux kernel did not properly validate received frames that are larger than the set MTU size, leading to a buffer overflow vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-45871)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-1081-gkeop<5.4.0-1081.85
5.4.0-1081.85
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-5.4.0-1118-gcp<5.4.0-1118.127
5.4.0-1118.127
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-5.4.0-1120-azure<5.4.0-1120.127
5.4.0-1120.127
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-azure-lts-20.04<5.4.0.1120.113
5.4.0.1120.113
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-gcp-lts-20.04<5.4.0.1118.120
5.4.0.1118.120
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-gkeop<5.4.0.1081.79
5.4.0.1081.79
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-gkeop-5.4<5.4.0.1081.79
5.4.0.1081.79
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-5.4.0-1118-gcp<5.4.0-1118.127~18.04.1
5.4.0-1118.127~18.04.1
Ubuntu Ubuntu=18.04
All of
ubuntu/linux-image-5.4.0-1120-azure<5.4.0-1120.127~18.04.1
5.4.0-1120.127~18.04.1
Ubuntu Ubuntu=18.04
All of
ubuntu/linux-image-azure<5.4.0.1120.93
5.4.0.1120.93
Ubuntu Ubuntu=18.04
All of
ubuntu/linux-image-gcp<5.4.0.1118.94
5.4.0.1118.94
Ubuntu Ubuntu=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6495-2?

    The severity of USN-6495-2 is not mentioned in the provided information.

  • How can a local privileged attacker exploit CVE-2023-31085?

    A local privileged attacker can exploit CVE-2023-31085 by causing a denial of service (system crash) through improper checks in the UBI driver.

  • Which Linux kernel versions are affected by USN-6495-2?

    The Linux kernel versions affected by USN-6495-2 are: 5.4.0-1081-gkeop, 5.4.0-1118-gcp, 5.4.0-1120-azure, 5.4.0.1120.113, 5.4.0.1118.120, 5.4.0.1081.79, 5.4.0-1118-gcp, 5.4.0-1120-azure, 5.4.0.1120.93, and 5.4.0.1118.94.

  • How do I fix the Linux kernel vulnerabilities mentioned in USN-6495-2?

    To fix the Linux kernel vulnerabilities, update to the respective kernel versions provided: 5.4.0-1081.85, 5.4.0-1118.127, 5.4.0-1120.127, 5.4.0.1120.113, 5.4.0.1118.120, 5.4.0.1081.79, 5.4.0-1118.127~18.04.1, 5.4.0-1120.127~18.04.1, 5.4.0.1120.93, and 5.4.0.1118.94.

  • Where can I find more information about USN-6495-2?

    More information about USN-6495-2 can be found at the following references: [link1], [link2], [link3]

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