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CVE-2026-89693

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.11, 5.16, 6.6.160, 6.12.111, 6.18.51, and 1 more
None on Exploit-DB, Metasploit or GitHub

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 ]

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b · fixed in 2d8a8ed4f9d8637ef0f18d47d19193e7b780e90e; From c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b · fixed in 26877d3a09afb3838a053867a655ca30c46a1f81; From c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b · fixed in 430ed49a16cf9ca249d0fb51490582090bc4848b; From c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b · fixed in 80cebb0e8a8d1e758f0d671f5e047279c5c3e528; From c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b · fixed in 2c7912732184773dbd371a411da87af1cc080b86; From 5.10.220 · fixed in 5.11; From 5.15.154 · fixed in 5.16

  • Linux Linux

    6.0

  • KernelLinux

    From 6.0.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.4

References 5

git.kernel.org