{"id":"CVE-2026-90271","title":"In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error inter…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error inter…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= f04046f2577a5c76167333ca99d3903ee5331ba0 < a29044c9c83513c7463de2adb84c169685562ad2","Linux >= f04046f2577a5c76167333ca99d3903ee5331ba0 < fc996c39689bb15aa80e5366809434f7258fb703","Linux 6.19"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:23.677","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90271","references":[{"url":"https://git.kernel.org/stable/c/a29044c9c83513c7463de2adb84c169685562ad2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc996c39689bb15aa80e5366809434f7258fb703","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90271.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90271"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536548"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90271"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90271"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90271.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.837Z","epss":0.00198,"epssPercentile":0.09451,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"slug":"CVE-2026-90271","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error interrupt then a dereference of a NULL pointer occurs as\nmpam_disable() sets the drvdata to NULL. Add an early return to the driver\nremove callback to avoid this.\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** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90271.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":217244,"id":"CVE-2026-90271","ts":1791360809056,"field":"cvss","old":null,"new":"5.5"},{"seq":217243,"id":"CVE-2026-90271","ts":1791360809056,"field":"severity","old":"none","new":"medium"}]}