{"id":"CVE-2026-80657","summary":"accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Guard management mailbox channel cleanup against NULL pointer\n\nThe management mailbox channel cleanup helpers can be called from\nerror handling paths when mgmt_chann has already been destroyed.\n\nAdd NULL checks to xdna_mailbox_free_channel() and\nxdna_mailbox_stop_channel() so the cleanup path safely returns instead\nof dereferencing a NULL mailbox channel pointer.","modified":"2026-08-30T03:48:16.199123217Z","published":"2026-08-28T06:49:03.200Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80657.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/506255d46bdb93a281cf39e72abbca124f5c7a1b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83d6d375f357ed2702b28d739511aad56d485de7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80657.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80657"},{"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":"b87f920b934426a24d54613f12ed67c03ae05024"},{"fixed":"83d6d375f357ed2702b28d739511aad56d485de7"},{"fixed":"506255d46bdb93a281cf39e72abbca124f5c7a1b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80657.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.14.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80657.json"}}],"schema_version":"1.9.0"}