CVE-2022-49997: net: lantiq_xrx200: restore buffer if memory allocation failed

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-18 · updated 2026-08-04
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: net: lantiq_xrx200: restore buffer if memory allocation failed In a situation where memory allocation fails, an invalid buffer address is stored. When this descriptor is used again, the system panics in the build_skb() function when accessing memory.

Affected products

Linux kernel: from 5.4.128 before 5.5; from 5.10.46 before 5.11; from 5.12.13 before 5.13; from 5.13.1 before 5.19.6; 5.13, 5.13-rc7, 6.0-rc1, 6.0-rc2 — fixed in 5.11, 5.13, 5.19.6, 5.5

How to fix

Upgrade to a fixed version: Linux kernel 5.11, 5.13, 5.19.6, 5.5. Check the vendor advisory for mitigations.

References

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