Improper privilege management in Linux kernel - CVE-2025-68242

Vulnerability identifier: #VU120155

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-68242

CWE-ID: CWE-269

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to read and manipulate data.

The vulnerability exists due to improperly imposed permissions within the nfs_setattr() function in fs/nfs/inode.c. A local user can read and manipulate data.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-azure (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 6.17.0-14.14, 6.17.0-1006.7, 6.17.0-1008.8
linux-gcp (Ubuntu package) - update to 6.17.0-1007.7
linux-aws (Ubuntu package) - update to 6.17.0-1007.7
linux-azure (Ubuntu package) - update to 6.17.0-1008.8
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1011.11

• https://git.kernel.org/stable/c/0e9be902041c6b9f0ed4b72764187eed1067a42f
• https://git.kernel.org/stable/c/b2e4cda71ed062c87573b016d2d956a62f4258ed
• https://git.kernel.org/stable/c/b623390045a81fc559decb9bfeb79319721d3dfb

• Improper privilege management in Linux kernel nfs
• Ubuntu update for linux-gcp
• Ubuntu update for linux
• Ubuntu update for linux-aws
• Ubuntu update for linux-oem-6.17
• Ubuntu update for linux-azure