CVE-2025-68820

Published Jan 13, 2026

Overview

CVE-2025-68820 is a known-severity vulnerability. It was published on January 13, 2026.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

ext4: xattr: fix null pointer deref in ext4_raw_inode()

If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED),

iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all()

lacks error checking, this will lead to a null pointer dereference

in ext4_raw_inode(), called right after ext4_get_inode_loc().

Found by Linux Verification Center (linuxtesting.org) with SVACE.

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

Ref git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f Ref git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 Ref git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2 Ref git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec Ref git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6 Ref git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 Ref git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142 Ref cert-portal.siemens.com/productcert/html/ssa-019113.html

Frequently Asked Questions

What is CVE-2025-68820?

CVE-2025-68820 is a known-severity vulnerability. It was published on January 13, 2026.

How severe is CVE-2025-68820?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2025-68820?

How can CyberStrike help with CVE-2025-68820?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-68820 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.