CVE-2022-49461: amt: fix memory leak for advertisement message

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-26 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: amt: fix memory leak for advertisement message When a gateway receives an advertisement message, it extracts relay information and then it should be freed. But the advertisement handler doesn't free it. So, memory leak would occur.

Affected products

Linux kernel: from 5.16 before 5.17.14; from 5.18 before 5.18.3 — fixed in 5.17.14, 5.18.3

How to fix

Upgrade to a fixed version: Linux kernel 5.17.14, 5.18.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/19bb2d57eac86a368839a92117d8a10ab7183623
https://git.kernel.org/stable/c/e7322da399fb86a2072f008b56f7160afa1b2051
https://git.kernel.org/stable/c/fe29794c3585d039fefebaa2b5a4932a627ad4fd

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