What is CVE-2025-68266?

CVE-2025-68266 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 2.6.12 onward and patched in 5.10.248, 5.15.198, 6.1.160 and others. CVE-2025-68266 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68266?

CVE-2025-68266 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-68266?

Yes, CVE-2025-68266 has been patched. Fixed versions include 5.10.248, 5.15.198, 6.1.160 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68266 actively exploited?

CVE-2025-68266 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68266

In the Linux kernel, the following vulnerability has been resolved: bfs: Reconstruct file type when loading from disk syzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when the S_IFMT bits of the 32bits "mode" field loaded from disk are corrupted or when the 32bits "attributes" field loaded from disk are corrupted. A documentation says that BFS uses only lower 9 bits of the "mode" field. But I can't find an explicit explanation that the unused upper 23 bits (especially, the S_IFMT bits) are initialized with 0. Therefore, ignore the S_IFMT bits of the "mode" field loaded from disk. Also, verify that the value of the "attributes" field loaded from disk is either BFS_VREG or BFS_VDIR (because BFS supports only regular files and the root directory).

Package Linux Kernel

Published 2025-12-16

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.62, 6.17.12, 6.18 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 5.10.248 5.10.x ✓ 5.15.198 5.15.x ✓ 6.1.160 6.1.x ✓ 6.6.120 6.6.x ✓ 6.12.62 6.12.x ✓ 6.17.12 6.17.x ✓ 6.18

References

The following references provide additional information about CVE-2025-68266 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/34ab4c75588c07cca12884f2bf6b0347c7a13872
Patch
Kernel patch commit
https://git.kernel.org/stable/c/77899444d46162aeb65f229590c26ba266864223
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8f73336b75bd3457b6f9410f2a0601a238f32238
Patch

7 patch commits total View all on NVD

Frequently asked questions

What is CVE-2025-68266?

CVE-2025-68266 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.12 onward and has been patched in 5.10.248, 5.15.198, 6.1.160 and others. CVE-2025-68266 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-68266?

Yes — CVE-2025-68266 has been patched. Fixed versions include 5.10.248, 5.15.198, 6.1.160 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68266 actively exploited?

No — CVE-2025-68266 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.