CVE-2025-39912

MEDIUM

Linux Kernel 6.12-6.12.47 - Use-After-Free in NFS Local I/O Credential Handling

Title source: llm

Description

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.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/57c1bb02b4fc8eec6eb01736e7fad26dffacf18c

Patch

https://git.kernel.org/stable/c/c250be1d75bf80dc5ab46f0b434b746c1868a1ea

Patch

https://git.kernel.org/stable/c/992203a1fba51b025c60ec0c8b0d9223343dea95

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 3.3%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (12)

linux/Kernel 6.12.0 - 6.12.48linux

linux/Kernel 6.13.0 - 6.16.8linux

Linux/Linux < 6.12

Linux/Linux 6.12

Linux/Linux 6.12.48 - 6.12.*

Linux/Linux 6.16.8 - 6.16.*

Linux/Linux 6.17

Linux/Linux b9f5dd57f4a52990963eeb1f1b58d00f717ece69 - 57c1bb02b4fc8eec6eb01736e7fad26dffacf18c

Linux/Linux b9f5dd57f4a52990963eeb1f1b58d00f717ece69 - 992203a1fba51b025c60ec0c8b0d9223343dea95

Linux/Linux b9f5dd57f4a52990963eeb1f1b58d00f717ece69 - c250be1d75bf80dc5ab46f0b434b746c1868a1ea

... and 2 more

Published Oct 01, 2025

Tracked Since Feb 18, 2026