High 8.0Published Jan 13, 2026

CVE-2025-68803NFSD: NFSv4 file creation neglects setting ACL

Updated under an hour ago (Oct 27, 2026, 7:00 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting ACL An NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL afterwards, and finds that it is only a default ACL (based on the mode bits) and not the ACL that was requested during file creation. This violates RFC 8881 section 6.4.1.3: "the ACL attribute is set as given". The issue occurs in nfsd_create_setattr(), which calls nfsd_attrs_valid() to determine whether to call nfsd_setattr(). However, nfsd_attrs_valid() checks only for iattr changes and security labels, but not POSIX ACLs. When only an ACL is present, the function returns false, nfsd_setattr() is skipped, and the POSIX ACL is never applied to the inode. Subsequently, when the client retrieves the ACL, the server finds no POSIX ACL on the inode and returns one generated from the file's mode bits rather than returning the originally-specified ACL.

CVSS: 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c5409ce523af40d5c3019717bc5b4f72038d48be before c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d; from d52acd23a327cada5fb597591267cfc09f08bb1d before 75f91534f9acdfef77f8fa094313b7806f801725; from c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b before 60dbdef2ebc2317266a385e4debdb1bb0e57afe1; from c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b before 381261f24f4e4b41521c0e5ef5cc0b9a786a9862; from c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b before bf4e671c651534a307ab2fabba4926116beef8c3; from c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b before 214b396480061cbc8b16f2c518b2add7fbfa5192; from c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b before 913f7cf77bf14c13cfea70e89bcb6d0b22239562; from 5.10.220 before 5.10.248; and 1 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP

References

References

https://git.kernel.org/stable/c/c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d
https://git.kernel.org/stable/c/75f91534f9acdfef77f8fa094313b7806f801725
https://git.kernel.org/stable/c/60dbdef2ebc2317266a385e4debdb1bb0e57afe1
https://git.kernel.org/stable/c/381261f24f4e4b41521c0e5ef5cc0b9a786a9862
https://git.kernel.org/stable/c/bf4e671c651534a307ab2fabba4926116beef8c3
https://git.kernel.org/stable/c/214b396480061cbc8b16f2c518b2add7fbfa5192
https://git.kernel.org/stable/c/913f7cf77bf14c13cfea70e89bcb6d0b22239562
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.