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CVE-2022-48784

4.7 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: cfg80211: fix race in netlink owner interface destruction My previous fix here to fix the deadlock left a race where the exact…

Published Jul 16, 2024CWE-362EPSS 0.17%

Overview

CVE-2022-48784 is a medium-severity vulnerability. It was published on July 16, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

cfg80211: fix race in netlink owner interface destruction

My previous fix here to fix the deadlock left a race where

the exact same deadlock (see the original commit referenced

below) can still happen if cfg80211_destroy_ifaces() already

runs while nl80211_netlink_notify() is still marking some

interfaces as nl_owner_dead.

The race happens because we have two loops here - first we

dev_close() all the netdevs, and then we destroy them. If we

also have two netdevs (first one need only be a wdev though)

then we can find one during the first iteration, close it,

and go to the second iteration -- but then find two, and try

to destroy also the one we didn't close yet.

Fix this by only iterating once.

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/241e633cb379c4f332fc1baf2abec95ec840cbebRefgit.kernel.org/stable/c/c979f792a2baf6d0f3419587668a1a6eba46a3d2Refgit.kernel.org/stable/c/f0a6fd1527067da537e9c48390237488719948edRefgit.kernel.org/stable/c/241e633cb379c4f332fc1baf2abec95ec840cbebRefgit.kernel.org/stable/c/c979f792a2baf6d0f3419587668a1a6eba46a3d2Refgit.kernel.org/stable/c/f0a6fd1527067da537e9c48390237488719948ed

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48784?

CVE-2022-48784 is a medium-severity vulnerability. It was published on July 16, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2022-48784?

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48784?

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-2022-48784?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48784 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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