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CVE-2024-49957

5.5 · MEDIUM
Published Oct 21, 2024 linux CWE-476 EPSS 0.25% (16th pctl)

Overview

CVE-2024-49957 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 2024 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:

ocfs2: fix null-ptr-deref when journal load failed.

During the mounting process, if journal_reset() fails because of too short

journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer.

Subsequently, ocfs2_journal_shutdown() calls

jbd2_journal_flush()->jbd2_cleanup_journal_tail()->

__jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail()

->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer

dereference error.

To resolve this issue, we should check the JBD2_LOADED flag to ensure the

journal was properly loaded. Additionally, use journal instead of

osb->journal directly to simplify the code.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 2.6.32, < 5.10.227 Affected

References

Ref git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962 Ref git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80a Ref git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f Ref git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0f Ref git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b Ref git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649 Ref git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120 Ref git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123 Ref git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05 Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-49957?

CVE-2024-49957 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-49957?

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-2024-49957?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-49957?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-49957 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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