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CVE-2024-56774

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot().

Published Jan 8, 2025CWE-476EPSS 0.21%

Overview

CVE-2024-56774 is a medium-severity vulnerability. It was published on January 8, 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: add a sanity check for btrfs root in btrfs_search_slot()

Syzbot reports a null-ptr-deref in btrfs_search_slot().

The reproducer is using rescue=ibadroots, and the extent tree root is

corrupted thus the extent tree is NULL.

When scrub tries to search the extent tree to gather the needed extent

info, btrfs_search_slot() doesn't check if the target root is NULL or

not, resulting the null-ptr-deref.

Add sanity check for btrfs root before using it in btrfs_search_slot().

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/3ed51857a50f530ac7a1482e069dfbd1298558d4Refgit.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcabRefgit.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2deceRefgit.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905bRefgit.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6Reflists.debian.org/debian-lts-announce/2025/03/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-56774?

CVE-2024-56774 is a medium-severity vulnerability. It was published on January 8, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56774?

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-2024-56774?

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-2024-56774?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-56774 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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