CVE-2023-53050: thunderbolt: Fix memory leak in margining

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-02 · updated 2026-06-17
Weakness: CWE-401

Description

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.

Affected products

Linux kernel: from 6.1 before 6.1.22; from 6.2 before 6.2.9; 6.3-rc1, 6.3-rc2, 6.3-rc3 — fixed in 6.1.22, 6.2.9

How to fix

Upgrade to a fixed version: Linux kernel 6.1.22, 6.2.9. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/0b357b360e671688f9bf38ff94300515b68bc247
https://git.kernel.org/stable/c/acec726473822bc6b585961f4ca2a11fa7f28341
https://git.kernel.org/stable/c/f390095bbd131ec2dfb29792d9f6fd0f0656bfc0

Get alerted when CVE-2023-53050 or the next vulnerability affects your stack