{"id":"CVE-2026-80657","state":"PUBLISHED","title":"accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer","description":"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.","publishedAt":"2026-08-28T06:49:03.200Z","updatedAt":"2026-08-28T06:49:03.200Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b87f920b934426a24d54613f12ed67c03ae05024","status":"affected","lessThan":"83d6d375f357ed2702b28d739511aad56d485de7","versionType":"git"},{"version":"b87f920b934426a24d54613f12ed67c03ae05024","status":"affected","lessThan":"506255d46bdb93a281cf39e72abbca124f5c7a1b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/amdxdna/amdxdna_mailbox.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/amdxdna/amdxdna_mailbox.c"]}],"references":["https://git.kernel.org/stable/c/83d6d375f357ed2702b28d739511aad56d485de7","https://git.kernel.org/stable/c/506255d46bdb93a281cf39e72abbca124f5c7a1b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80657.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80657","state":"PUBLISHED","datePublished":"2026-08-28T06:49:03.200Z","dateUpdated":"2026-08-28T06:49:03.200Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.780Z"},"containers":{"cna":{"title":"accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b87f920b934426a24d54613f12ed67c03ae05024","status":"affected","lessThan":"83d6d375f357ed2702b28d739511aad56d485de7","versionType":"git"},{"version":"b87f920b934426a24d54613f12ed67c03ae05024","status":"affected","lessThan":"506255d46bdb93a281cf39e72abbca124f5c7a1b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/amdxdna/amdxdna_mailbox.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/amdxdna/amdxdna_mailbox.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/83d6d375f357ed2702b28d739511aad56d485de7"},{"url":"https://git.kernel.org/stable/c/506255d46bdb93a281cf39e72abbca124f5c7a1b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-28T06:49:03.200Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}