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CVE-2024-27058

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: tmpfs: fix race on handling dquot rbtree A syzkaller reproducer found a race while attempting to remove dquot information from…

Published May 1, 2024CWE-362EPSS 0.39%

Overview

CVE-2024-27058 is a high-severity vulnerability. It was published on May 1, 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:

tmpfs: fix race on handling dquot rbtree

A syzkaller reproducer found a race while attempting to remove dquot

information from the rb tree.

Fetching the rb_tree root node must also be protected by the

dqopt->dqio_sem, otherwise, giving the right timing, shmem_release_dquot()

will trigger a warning because it couldn't find a node in the tree, when

the real reason was the root node changing before the search starts:

Thread 1 Thread 2

- shmem_release_dquot() - shmem_{acquire,release}_dquot()

- fetch ROOT - Fetch ROOT

- acquire dqio_sem

- wait dqio_sem

- do something, triger a tree rebalance

- release dqio_sem

- acquire dqio_sem

- start searching for the node, but

from the wrong location, missing

the node, and triggering a warning.

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/0a69b6b3a026543bc215ccc866d0aea5579e6ce2Refgit.kernel.org/stable/c/617d55b90e73c7b4aa2733ca6cc3f9b72d1124bbRefgit.kernel.org/stable/c/c7077f43f30d817d10a9f8245e51576ac114b2f0Refgit.kernel.org/stable/c/f82f184874d2761ebaa60dccf577921a0dbb3810Refgit.kernel.org/stable/c/0a69b6b3a026543bc215ccc866d0aea5579e6ce2Refgit.kernel.org/stable/c/617d55b90e73c7b4aa2733ca6cc3f9b72d1124bbRefgit.kernel.org/stable/c/c7077f43f30d817d10a9f8245e51576ac114b2f0Refgit.kernel.org/stable/c/f82f184874d2761ebaa60dccf577921a0dbb3810

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27058?

CVE-2024-27058 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-27058?

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-2024-27058?

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-2024-27058?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27058 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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