Linux Kernel up to 6.1.21/6.2.8 thunderbolt memory leak

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.1.21/6.2.8. Affected is an unknown function of the component thunderbolt. Executing a manipulation can lead to memory leak. This vulnerability is registered as CVE-2023-53050. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.21/6.2.8. It has been declared as critical. This vulnerability affects an unknown part of the component thunderbolt. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix memory leak in margining Memory for the usb4->margining needs to be relased for the upstream port of the router as well, even though the debugfs directory gets released with the router device removal. Fix this.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2023-53050 since 04/16/2025. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 246871 (Linux Distros Unpatched Vulnerability : CVE-2023-53050), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.22 or 6.2.9 eliminates this vulnerability. Applying the patch f390095bbd131ec2dfb29792d9f6fd0f0656bfc0/0b357b360e671688f9bf38ff94300515b68bc247/acec726473822bc6b585961f4ca2a11fa7f28341 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (246871). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8

License

• open-source

Website

• Vendor: https://www.kernel.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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