{"schema":"threatline.record/2","record":{"id":"CVE-2026-98170","aliases":[],"summary":"smb: client: fix OOB struct field reads in move_smb2_ea_to_cifs()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix OOB struct field reads in move_smb2_ea_to_cifs()\n\nIn move_smb2_ea_to_cifs(), the while (src_size > 0) loop condition is\ninsufficient. It allows iteration to continue even if the remaining\nsrc_size is too small to contain a complete smb2_ea_info structure.\nConsequently, reads of ea_name_length and ea_value_length can occur\nout-of-bounds.\n\nFix this by ensuring src_size >= sizeof(*src) before attempting to read\nany structure fields. Additionally, reject any next_entry_offset that is\nsmaller than sizeof(*src) or that would advance the pointer beyond the\navailable buffer.\n\nNote that for calls where the server returns a malformed EA list, the\nerror returned to userspace changes from -ENODATA (getxattr) or\n-ERANGE (listxattr) to -EIO. This correctly signals a server protocol\nerror rather than misleadingly indicating \"attribute not present\" or\n\"output buffer too small\".","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98170","source_modified_at":"2026-10-21T12:54:48.314Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"95907fea4fd8ccc736e0a428e52159b4d42b9958","lessThan":"61812323c037a94e2e7f0db7ee740c34b126bffe","status":"affected","versionType":"git"},{"version":"95907fea4fd8ccc736e0a428e52159b4d42b9958","lessThan":"d3546cecbf81d98bf3b472d341f981eb48c04f47","status":"affected","versionType":"git"},{"version":"95907fea4fd8ccc736e0a428e52159b4d42b9958","lessThan":"34a3942e787b9c59758115bd65fe1ec89d68c7a4","status":"affected","versionType":"git"},{"version":"95907fea4fd8ccc736e0a428e52159b4d42b9958","lessThan":"13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca","status":"affected","versionType":"git"},{"version":"95907fea4fd8ccc736e0a428e52159b4d42b9958","lessThan":"eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98170","source_modified_at":"2026-10-21T12:54:48.314Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.14","status":"affected"},{"version":"0","lessThan":"4.14","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","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-2026-98170","source_modified_at":"2026-10-21T12:54:48.314Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"61812323c037a94e2e7f0db7ee740c34b126bffe","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98170","source_modified_at":"2026-10-21T12:54:48.314Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"34a3942e787b9c59758115bd65fe1ec89d68c7a4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98170","source_modified_at":"2026-10-21T12:54:48.314Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09332,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:44:15.138Z","modified_at":"2026-10-21T12:54:48.314Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98170","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:54:48.314Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98170","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/61812323c037a94e2e7f0db7ee740c34b126bffe"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d3546cecbf81d98bf3b472d341f981eb48c04f47"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/34a3942e787b9c59758115bd65fe1ec89d68c7a4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb"}],"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":"2026-10-21T12:54:48.314Z","content_hash":"5301aa06085c0d9849ceaa036ce29e05a0b7dc2e62f1f36e3a0a6ca197dada8d"}}