{"id":"CVE-2026-90271","summary":"arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt","details":"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 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.","modified":"2026-09-19T03:47:25.666040234Z","published":"2026-09-17T16:08:05.304Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90271.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/a29044c9c83513c7463de2adb84c169685562ad2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc996c39689bb15aa80e5366809434f7258fb703"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90271.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90271"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f04046f2577a5c76167333ca99d3903ee5331ba0"},{"fixed":"a29044c9c83513c7463de2adb84c169685562ad2"},{"fixed":"fc996c39689bb15aa80e5366809434f7258fb703"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90271.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90271.json"}}],"schema_version":"1.9.0"}