{"id":"CVE-2026-31544","summary":"firmware: arm_scmi: Fix NULL dereference on notify error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix NULL dereference on notify error path\n\nSince commit b5daf93b809d1 (\"firmware: arm_scmi: Avoid notifier\nregistration for unsupported events\") the call chains leading to the helper\n__scmi_event_handler_get_ops expect an ERR_PTR to be returned on failure to\nget an handler for the requested event key, while the current helper can\nstill return a NULL when no handler could be found or created.\n\nFix by forcing an ERR_PTR return value when the handler reference is NULL.","modified":"2026-07-08T08:00:03.862294441Z","published":"2026-04-24T14:33:13.173Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31544.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/555317d6100164748f7d09f80142739bd29f0cda"},{"type":"WEB","url":"https://git.kernel.org/stable/c/70d9bd9a2e683afe6200b0c20af22f06f1a199a4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8414d2800c34528467df23ce6192c254a73e4459"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31544.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31544"},{"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":"b5daf93b809d13a194f8a8eeacfab1cfa241bbc3"},{"fixed":"70d9bd9a2e683afe6200b0c20af22f06f1a199a4"},{"fixed":"8414d2800c34528467df23ce6192c254a73e4459"},{"fixed":"555317d6100164748f7d09f80142739bd29f0cda"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31544.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.18.20"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31544.json"}}],"schema_version":"1.7.5"}