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CVE-2024-26601

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove red…

Published Feb 26, 2024EPSS 0.29%

Overview

CVE-2024-26601 is a high-severity vulnerability. It was published on February 26, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

ext4: regenerate buddy after block freeing failed if under fc replay

This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant

mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on

code in mb_free_blocks(), fast commit replay can end up marking as free

blocks that are already marked as such. This causes corruption of the

buddy bitmap so we need to regenerate it in that case.

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/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581Refgit.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4Refgit.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aRefgit.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326Refgit.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4eRefgit.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cbRefgit.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581Refgit.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4Refgit.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aRefgit.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26601?

CVE-2024-26601 is a high-severity vulnerability. It was published on February 26, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26601?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26601?

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-2024-26601?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26601 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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