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CVE-2022-49416

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free in chanctx code In ieee80211_vif_use_reserved_context(), when we have an old context and the…

Published Feb 26, 2025CWE-416EPSS 0.34%

Overview

CVE-2022-49416 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: fix use-after-free in chanctx code

In ieee80211_vif_use_reserved_context(), when we have an

old context and the new context's replace_state is set to

IEEE80211_CHANCTX_REPLACE_NONE, we free the old context

in ieee80211_vif_use_reserved_reassign(). Therefore, we

cannot check the old_ctx anymore, so we should set it to

NULL after this point.

However, since the new_ctx replace state is clearly not

IEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do

anything else in this function and can just return to

avoid accessing the freed old_ctx.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76Refgit.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721eRefgit.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4Refgit.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6cRefgit.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331Refgit.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2cRefgit.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449aRefgit.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34Refgit.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49416?

CVE-2022-49416 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-49416?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-49416?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49416?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49416 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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