CVE-2025-39912
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-12-12

Assigner: kernel.org

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.
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Meta Information
Published
2025-10-01
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-10-01
EPSS Evaluated
2026-06-15
NVD
CVE-2025-39912
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.12 (inc) to 6.12.48 (exc)
linux linux_kernel From 6.13 (inc) to 6.16.8 (exc)
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
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Exploitability
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CWE ID Description
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Executive Summary

This vulnerability in the Linux kernel involves the nfsd filecache code where if the nfsd_file is released immediately without restoring credentials, it can trigger a BUG_ON error in the __put_cred() function related to credential handling. Specifically, the code fails to restore credentials before releasing pageio data, which causes an assertion failure when putting the file's credentials.

Impact Analysis

This vulnerability can cause the Linux kernel to hit a BUG_ON assertion failure, potentially leading to kernel crashes or instability when the nfsd filecache code mishandles credentials during file release operations.

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