{"id":"CVE-2026-89693","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()\n\nnfsd4_create() stores the return value of nfsd4_acl_to_attr() in\nstatus, but the switch(create->cr_type)…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()\n\nnfsd4_create() stores the return value of nfsd4_acl_to_attr() in\nstatus, but the switch(create->cr_type)…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-252"],"vendor":"Linux","product":"Linux","affected":["Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 26877d3a09afb3838a053867a655ca30c46a1f81","Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 430ed49a16cf9ca249d0fb51490582090bc4848b","Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 80cebb0e8a8d1e758f0d671f5e047279c5c3e528","Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 2c7912732184773dbd371a411da87af1cc080b86","Linux c5409ce523af40d5c3019717bc5b4f72038d48be","Linux d52acd23a327cada5fb597591267cfc09f08bb1d","Linux >= 5.10.220 < 5.11","Linux >= 5.15.154 < 5.16","Linux 6.0"],"published":"2026-09-11","updated":"2026-09-21","sourceUpdated":"2026-09-21T14:17:25.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89693","references":[{"url":"https://git.kernel.org/stable/c/26877d3a09afb3838a053867a655ca30c46a1f81","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2c7912732184773dbd371a411da87af1cc080b86","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/430ed49a16cf9ca249d0fb51490582090bc4848b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/80cebb0e8a8d1e758f0d671f5e047279c5c3e528","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89693.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89693"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532042"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89693"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89693"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89693.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00166,"epssPercentile":0.06255,"cvssSource":"vendor","ingestedAt":"2026-09-14T11:11:19.885Z","slug":"CVE-2026-89693","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()\n\nnfsd4_create() stores the return value of nfsd4_acl_to_attr() in\nstatus, but the switch(create->cr_type) block unconditionally\noverwrites it in every branch. ACL translation errors are silently\ndiscarded, and the CREATE proceeds without the requested ACL.\n\nAdd an early exit check after nfsd4_acl_to_attr(), matching the\npattern already used in nfsd4_setattr().\n\n[ cel: prefer NFS4ERR_BADTYPE over NFS4ERR_ATTRNOTSUPP ]\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89693.json)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202726,"id":"CVE-2026-89693","ts":1789403715304,"field":"cvss","old":null,"new":"7"},{"seq":202725,"id":"CVE-2026-89693","ts":1789403715304,"field":"severity","old":"none","new":"high"},{"seq":109636,"id":"CVE-2026-89693","ts":1789183732737,"field":"cvss","old":null,"new":"7.1"},{"seq":109635,"id":"CVE-2026-89693","ts":1789183732737,"field":"severity","old":"none","new":"high"}]}