CWE
416
Advisory Published

USN-5783-1: Linux kernel (OEM) vulnerability

First published: Fri Dec 16 2022(Updated: )

Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-oem-22.04<5.17.0.1025.23
5.17.0.1025.23
=22.04
All of
ubuntu/linux-image-oem-22.04a<5.17.0.1025.23
5.17.0.1025.23
=22.04
All of
ubuntu/linux-image-5.17.0-1025-oem<5.17.0-1025.26
5.17.0-1025.26
=22.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability addressed by USN-5783-1?

    The vulnerability addressed by USN-5783-1 is a use-after-free vulnerability in the Bluetooth L2CAP handshake implementation in the Linux kernel.

  • How does the use-after-free vulnerability in the Bluetooth L2CAP handshake implementation impact Linux kernel?

    The use-after-free vulnerability in the Bluetooth L2CAP handshake implementation could allow a physically proximate attacker to cause a denial of service (system crash) or possibly execute arbitrary code.

  • What software versions are affected by the vulnerability?

    The Linux kernel versions affected by the vulnerability include linux-image-oem-22.04 (version up to 5.17.0.1025.23) and linux-image-5.17.0-1025-oem (version up to 5.17.0-1025.26) on Ubuntu 22.04.

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

    To fix the vulnerability in the Linux kernel, you should update to version 5.17.0.1025.23 or later for linux-image-oem-22.04 and version 5.17.0-1025.26 or later for linux-image-5.17.0-1025-oem.

  • Where can I find more information about the vulnerability?

    You can find more information about the vulnerability in USN-5783-1 on the Ubuntu Security Notices website.

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