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CVE-2022-49914

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix inode list leak during backref walking at resolve_indirect_refs() During backref walking, at resolve_indirect_refs()…

Published May 1, 2025CWE-401EPSS 0.20%

Overview

CVE-2022-49914 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, 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:

btrfs: fix inode list leak during backref walking at resolve_indirect_refs()

During backref walking, at resolve_indirect_refs(), if we get an error

we jump to the 'out' label and call ulist_free() on the 'parents' ulist,

which frees all the elements in the ulist - however that does not free

any inode lists that may be attached to elements, through the 'aux' field

of a ulist node, so we end up leaking lists if we have any attached to

the unodes.

Fix this by calling free_leaf_list() instead of ulist_free() when we exit

from resolve_indirect_refs(). The static function free_leaf_list() is

moved up for this to be possible and it's slightly simplified by removing

unnecessary code.

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/2c0329406bb28109c07c6e23e5e3e0fa618a95d7Refgit.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7Refgit.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1Refgit.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4fRefgit.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623Refgit.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9Refgit.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49914?

CVE-2022-49914 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49914?

This vulnerability has a CVSS 3.1 base score of 5.5, 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-2022-49914?

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-2022-49914?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49914 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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