PT-2026-2535 · Linux+2 · Linux Kernel+2
Published
2025-11-18
·
Updated
2026-05-26
·
CVE-2025-68803
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the Linux kernel’s Network File System daemon (NFSD) related to handling Access Control Lists (ACLs) during NFSv4 file creation. Specifically, when an NFSv4 client attempts to set an ACL with a named principal during file creation, the ACL is not correctly applied to the inode. This occurs because the
nfsd create setattr() function skips applying the POSIX ACL when only an ACL is present, violating RFC 8881 section 6.4.1.3. As a result, the server returns a default ACL based on the file’s mode bits instead of the originally specified ACL. The issue is located in the nfsd create setattr() function, which relies on nfsd attrs valid() to determine whether to call nfsd setattr().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu