{"schema":"threatline.record/2","record":{"id":"CVE-2026-98145","aliases":[],"summary":"accel/amdxdna: reject a command chain that carries no commands","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: reject a command chain that carries no commands\n\nA chain whose command_count is zero passes the payload length check,\nbecause struct_size(payload, data, 0) is just the header. The fill loop\nthen does not run, so offset stays zero and the request is submitted with\na zero-length buffer.\n\nOn firmware without AIE2_NPU_COMMAND that ends at the opcode check, since\nop is still ERT_INVALID_CMD and aie2_get_chain_msg_op() answers\nMSG_OP_MAX_OPCODE. aie2_get_npu_chain_msg_op() answers\nMSG_OP_CHAIN_EXEC_NPU whatever it is given, so there the submission\ncontinues to drm_clflush_virt_range(cmd_buf, 0), which reads the byte\nbefore the buffer and faults on the vmap guard page. EXEC_CMD is\nreachable by any process that can open the render node.\n\nReject the request instead.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98145","source_modified_at":"2026-10-19T09:14:38.597Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"8ed8b02396172b137ca8c78c3cb999ddf4fb0bbf","lessThan":"ed74e8d603df457bfcf16ed4f8f1660a1525759e","status":"affected","versionType":"git"},{"version":"8ed8b02396172b137ca8c78c3cb999ddf4fb0bbf","lessThan":"ef6d27af71e1dc43181ec797a6aaa77c27c36786","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98145","source_modified_at":"2026-10-19T09:14:38.597Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7.1","status":"affected"},{"version":"0","lessThan":"7.1","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00145,"percentile":0.03418,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:36:19.692Z","modified_at":"2026-10-19T09:14:38.597Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98145","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:14:38.597Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98145","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/ed74e8d603df457bfcf16ed4f8f1660a1525759e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ef6d27af71e1dc43181ec797a6aaa77c27c36786"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:14:38.597Z","content_hash":"3ef1bb893fbc0697c9673a196e5e5dd1eadd832c6767c6b5ab65b333ce148569"}}