CVE-2026-89693

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 ]

Package Linux Kernel
Published 2026-09-11
Last modified 2026-09-21
Patch available
Yes

Affected versions

Linux kernel versions 5.10.220, 5.15.154, 6.0 and later are affected. Fixed in 6.12.111, 6.18.51, 7.2.4, 7.3-rc1 and their respective stable series.

Affected from
≥ 5.10.220 ≥ 5.15.154 ≥ 6.0
Fixed in
✓ 6.12.111 6.12.x ✓ 6.18.51 6.18.x ✓ 7.2.4 7.2.x ✓ 7.3-rc1

References

4 total

Frequently asked questions

  • What is CVE-2026-89693?

    CVE-2026-89693 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.220 onward and has been patched in 6.12.111, 6.18.51, 7.2.4 and others. CVE-2026-89693 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-89693?

    Yes. CVE-2026-89693 has been patched. Fixed versions include 6.12.111, 6.18.51, 7.2.4 and others. If you are running Linux kernel 5.10.220 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-89693 actively exploited?

    No. CVE-2026-89693 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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