CVE-2025-68820 - CVE House
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Status published Unknown CVE-2025-68820

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3, f737418b6de31c962c7192777ee4018906975383, cf9291a3449b04688b81e32621e88de8f4314b54, 362a90cecd36e8a5c415966d0b75b04a0270e4dd, eb59cc31b6ea076021d14b04e7faab1636b87d0e, c8e008b60492cf6fd31ef127aea6d02fd3d314cd, 6aff941cb0f7d0c897c3698ad2e30672709135e3, 3bc6317033f365ce578eb6039445fb66162722fd, 836e625b03a666cf93ff5be328c8cb30336db872, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 5.4.293, 6.13.12, 6.14.3, 6.15, 0, 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19

Timeline

Official Publish: January 13th, 2026
Last Modified: July 14th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.