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CVE-2025-68242

NFS: Fix LTP test failures when timestamps are delegated

In the Linux kernel, the following vulnerability has been resolved:

NFS: Fix LTP test failures when timestamps are delegated

The utimes01 and utime06 tests fail when delegated timestamps are
enabled, specifically in subtests that modify the atime and mtime
fields using the 'nobody' user ID.

The problem can be reproduced as follow:

# echo "/media *(rw,no_root_squash,sync)" >> /etc/exports
# export -ra
# mount -o rw,nfsvers=4.2 127.0.0.1:/media /tmpdir
# cd /opt/ltp
# ./runltp -d /tmpdir -s utimes01
# ./runltp -d /tmpdir -s utime06

This issue occurs because nfs_setattr does not verify the inode's
UID against the caller's fsuid when delegated timestamps are
permitted for the inode.

This patch adds the UID check and if it does not match then the
request is sent to the server for permission checking.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version e12912d94137ab36ee704a91f465ff15c8b423da
Version < b2e4cda71ed062c87573b016d2d956a62f4258ed
Status affected
Version e12912d94137ab36ee704a91f465ff15c8b423da
Version < 0e9be902041c6b9f0ed4b72764187eed1067a42f
Status affected
Version e12912d94137ab36ee704a91f465ff15c8b423da
Version < b623390045a81fc559decb9bfeb79319721d3dfb
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.11
Status affected
Version 0
Version < 6.11
Status unaffected
Version <= 6.12.*
Version 6.12.59
Status unaffected
Version <= 6.17.*
Version 6.17.9
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.058
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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