CVE-2023-53861

In the Linux kernel, the following vulnerability has been resolved: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

Package Linux Kernel
Published 2025-12-09
Last modified 2026-04-15
Patch available
Yes

Affected versions

Linux kernel versions 5.10.181, 5.15.113, 6.1.30, 6.3.4, 6.4 and later are affected. Fixed in 5.10.195, 5.15.132, 6.1.53, 6.4.16, 6.5.3, 6.6 and their respective stable series.

Affected from
≥ 5.10.181 ≥ 5.15.113 ≥ 6.1.30 ≥ 6.3.4 ≥ 6.4
Fixed in
✓ 5.10.195 5.10.x ✓ 5.15.132 5.15.x ✓ 6.1.53 6.1.x ✓ 6.4.16 6.4.x ✓ 6.5.3 6.5.x ✓ 6.6

References

The following references provide additional information about CVE-2023-53861 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

6 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2023-53861?

    CVE-2023-53861 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.181 onward and has been patched in 5.10.195, 5.15.132, 6.1.53 and others. CVE-2023-53861 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2023-53861?

    Yes — CVE-2023-53861 has been patched. Fixed versions include 5.10.195, 5.15.132, 6.1.53 and others. If you are running Linux kernel 5.10.181 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-53861 actively exploited?

    No — CVE-2023-53861 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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