CVE-2022-42721 Memory corruption in n/a

What is CVE-2022-42721?

CVE-2022-42721 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 13 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in turn, potentially execute code.

Weakness: CWE-835

Which versions are affected by CVE-2022-42721?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel.

How do I fix CVE-2022-42721?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-42721 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-42721 exists.

Other vulnerabilities in Debian Debian Linux

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• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-253642088, ALPINE-CVE-2022-42721, ASB-A-253642088, AZL-11117, DEBIAN-CVE-2022-42721, GHSA-6976-m887-r48h and 1 more.