What is CVE-2025-39912?

CVE-2025-39912 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12 onward and patched in 6.12.48, 6.16.8 and 6.17. CVE-2025-39912 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-39912?

CVE-2025-39912 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-39912?

Yes, CVE-2025-39912 has been patched. Fixed versions include 6.12.48, 6.16.8 and 6.17. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-39912 actively exploited?

CVE-2025-39912 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-39912

Medium

In the Linux kernel, the following vulnerability has been resolved: nfs/localio: restore creds before releasing pageio data Otherwise if the nfsd filecache code releases the nfsd_file immediately, it can trigger the BUG_ON(cred == current->cred) in __put_cred() when it puts the nfsd_file->nf_file->f-cred.

Package Linux Kernel

Published 2025-10-01

Last modified 2026-01-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 6.12 and later are affected. Fixed in 6.12.48, 6.16.8, 6.17 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.48 6.12.x ✓ 6.16.8 6.16.x ✓ 6.17

References

The following references provide additional information about CVE-2025-39912 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/57c1bb02b4fc8eec6eb01736e7fad26dffacf18c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/992203a1fba51b025c60ec0c8b0d9223343dea95
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c250be1d75bf80dc5ab46f0b434b746c1868a1ea
Patch

Details

CVE ID CVE-2025-39912

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-01

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-39912?

CVE-2025-39912 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.48, 6.16.8 and 6.17. CVE-2025-39912 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-39912?

CVE-2025-39912 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-39912?

Yes — CVE-2025-39912 has been patched. Fixed versions include 6.12.48, 6.16.8 and 6.17. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-39912 actively exploited?

No — CVE-2025-39912 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.