CVE-2026-89693

Summary

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

nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

nfsd4_create() stores the return value of nfsd4_acl_to_attr() in status, but the switch(create->cr_type) block unconditionally overwrites it in every branch. ACL translation errors are silently discarded, and the CREATE proceeds without the requested ACL.

Add an early exit check after nfsd4_acl_to_attr(), matching the pattern already used in nfsd4_setattr().

[ cel: prefer NFS4ERR_BADTYPE over NFS4ERR_ATTRNOTSUPP ]

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 430ed49a16cf9ca249d0fb51490582090bc4848baffected
LinuxLinuxc0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 80cebb0e8a8d1e758f0d671f5e047279c5c3e528affected
LinuxLinuxc0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 2c7912732184773dbd371a411da87af1cc080b86affected
LinuxLinuxc5409ce523af40d5c3019717bc5b4f72038d48beaffected
LinuxLinuxd52acd23a327cada5fb597591267cfc09f08bb1daffected
LinuxLinux5.10.220 < 5.11affected
LinuxLinux5.15.154 < 5.16affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.4 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References