{"schema":"threatline.record/2","record":{"id":"CVE-2026-98002","aliases":[],"summary":"iommu/amd: Fix ineffective error check in nested domain allocation","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Fix ineffective error check in nested domain allocation\n\namd_iommu_pdom_id_alloc() returns an int: a domain ID on success, or the\nnegative errno from ida_alloc_range() when the ID space is exhausted or\nmemory is short.  amd_iommu_alloc_domain_nested() stores that return value\nin gdom_info->hdom_id, which is a u32, and only then tests it:\n\n\tgdom_info->hdom_id = amd_iommu_pdom_id_alloc();\n\tif (gdom_info->hdom_id <= 0) {\n\nThe assignment discards the sign, so -ENOSPC becomes 0xffffffe4 and the\ntest never fires.  The nested domain is then set up with a host domain ID\nthat was never allocated, instead of the allocation failing with -ENOSPC.\n\nKeep the value in an int, test it there, and store it only once it is\nknown to be valid, which is what the other amd_iommu_pdom_id_alloc()\ncallers already do.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98002","source_modified_at":"2026-10-19T09:12:07.970Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"757d2b1fdf5b7d6eead5963a49b5780617987ab8","lessThan":"80c231f5577229d1e90a1e312b3095f9502f8625","status":"affected","versionType":"git"},{"version":"757d2b1fdf5b7d6eead5963a49b5780617987ab8","lessThan":"fa5c0827f0b7bac6d0a188f10118151769ae68fd","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98002","source_modified_at":"2026-10-19T09:12:07.970Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7.0","status":"affected"},{"version":"0","lessThan":"7.0","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":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98002","source_modified_at":"2026-10-19T09:12:07.970Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"80c231f5577229d1e90a1e312b3095f9502f8625","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00108,"percentile":0.01145,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:29.929Z","modified_at":"2026-10-19T09:12:07.970Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98002","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:12:07.970Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98002","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/80c231f5577229d1e90a1e312b3095f9502f8625"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fa5c0827f0b7bac6d0a188f10118151769ae68fd"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:12:07.970Z","content_hash":"724737284e3fcb9be4e9581f79953af5751691d8958b49930ee76722b9d69a6f"}}