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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00032.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 affected < b72a3476f0c97d02f63a6e9fff127348d55436f6
f737418b6de31c962c7192777ee4018906975383 affected < 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3
cf9291a3449b04688b81e32621e88de8f4314b54 affected < 190ad0f22ba49f1101182b80e3af50ca2ddfe72f
362a90cecd36e8a5c415966d0b75b04a0270e4dd affected < b5d942922182e82724b7152cb998f540132885ec
eb59cc31b6ea076021d14b04e7faab1636b87d0e affected < 5b154e901fda2e98570b8f426a481f5740097dc2
c8e008b60492cf6fd31ef127aea6d02fd3d314cd affected < ce5f54c065a4a7cbb92787f4f140917112350142
c8e008b60492cf6fd31ef127aea6d02fd3d314cd affected < b97cb7d6a051aa6ebd57906df0e26e9e36c26d14
6aff941cb0f7d0c897c3698ad2e30672709135e3 affected —
3bc6317033f365ce578eb6039445fb66162722fd affected —
836e625b03a666cf93ff5be328c8cb30336db872 affected —
Linux Linux affected
Version Status Constraints
6.15 affected —
0 unaffected < 6.15
5.10.248 unaffected ≤ 5.10.*
5.15.198 unaffected ≤ 5.15.*
6.1.160 unaffected ≤ 6.1.*
6.6.120 unaffected ≤ 6.6.*
6.12.64 unaffected ≤ 6.12.*
6.18.3 unaffected ≤ 6.18.*
6.19 unaffected ≤ *

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories
Source ID Title
Debian DSA Debian DSA DSA-6126-1 linux security update
Debian DSA Debian DSA DSA-6127-1 linux security update
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f cve-icon cve-icon
https://git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 cve-icon cve-icon
https://git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2 cve-icon cve-icon
https://git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec cve-icon cve-icon
https://git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6 cve-icon cve-icon
https://git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 cve-icon cve-icon
https://git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026011315-CVE-2025-68820-7a4f@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-68820 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-68820 cve-icon
History

Mon, 19 Jan 2026 12:45:00 +0000

Type Values Removed Values Added
References

Thu, 15 Jan 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 13 Jan 2026 15:45:00 +0000

Type Values Removed Values Added
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.
Title ext4: xattr: fix null pointer deref in ext4_raw_inode()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-02-09T08:34:10.331Z

Reserved: 2025-12-24T10:30:51.048Z

Link: CVE-2025-68820

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-13T16:16:04.327

Modified: 2026-01-19T13:16:15.563

Link: CVE-2025-68820

cve-icon Redhat

Severity : Low

Publid Date: 2026-01-13T00:00:00Z

Links: CVE-2025-68820 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.