What is CVE-2025-68806?

CVE-2025-68806 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.1.52 onward and patched in 6.1.160, 6.6.120, 6.12.64 and others. CVE-2025-68806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68806?

CVE-2025-68806 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-68806?

Yes, CVE-2025-68806 has been patched. Fixed versions include 6.1.160, 6.6.120, 6.12.64 and others. If you are running Linux kernel 6.1.52 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68806 actively exploited?

CVE-2025-68806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68806

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.

Package Linux Kernel

Published 2026-01-13

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 6.1.52, 5.15.131, 6.4.15, 6.5.2, 6.6 and later are affected. Fixed in 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19 and their respective stable series.

Affected from

≥ 6.1.52 ≥ 5.15.131 ≥ 6.4.15 ≥ 6.5.2 ≥ 6.6

Fixed in

✓ 6.1.160 6.1.x ✓ 6.6.120 6.6.x ✓ 6.12.64 6.12.x ✓ 6.18.3 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2025-68806 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/6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4
Patch
Kernel patch commit
https://git.kernel.org/stable/c/95d7a890e4b03e198836d49d699408fd1867cb55
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a28a375a5439eb474e9f284509a407efb479c925
Patch

5 patch commits total View all on NVD

Frequently asked questions

What is CVE-2025-68806?

CVE-2025-68806 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.1.52 onward and has been patched in 6.1.160, 6.6.120, 6.12.64 and others. CVE-2025-68806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-68806?

Yes — CVE-2025-68806 has been patched. Fixed versions include 6.1.160, 6.6.120, 6.12.64 and others. If you are running Linux kernel 6.1.52 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68806 actively exploited?

No — CVE-2025-68806 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.