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Vulnerability DatabaseCVE-2025-68242
CVE-2025-68242:
Linux Kernel vulnerability analysis and mitigation
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.
Source: NVD
Related Linux Kernel vulnerabilities:
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