{"schema":"threatline.record/2","record":{"id":"CVE-2026-98167","aliases":[],"summary":"smb: client: fix server->total_read for compound encrypted PDUs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix server->total_read for compound encrypted PDUs\n\nIn receive_encrypted_standard(), server->total_read is left at the\nfull decrypted frame size when walking sub-PDUs of a compound encrypted\nframe. As a result, cifs_handle_standard() passes this full size\nto smb2_check_message(), causing the PDU length guards to incorrectly\nvalidate the entire compound frame instead of the current sub-PDU.\n\nThis allows truncated non-last sub-PDUs to bypass length validation,\nleading to out-of-bounds reads in smb2_get_data_area_len().\n\nFix this by setting server->total_read to the true length of the\ncurrent sub-PDU: next_cmd for non-last sub-PDUs, and the remaining\npdu_length for the last one.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98167","source_modified_at":"2026-10-19T09:14:58.765Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"8703539d22fdbc13dd2db090ee199c3a427b8ea0","status":"affected","versionType":"git"},{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"e78fc1d240b27349b45a0f1c3e3c2c401d7e230d","status":"affected","versionType":"git"},{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"a46eb242e9eef3a3897d166748b23303c516e870","status":"affected","versionType":"git"},{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3","status":"affected","versionType":"git"},{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"282b72f9a7ef31296c48366db4128882999cc048","status":"affected","versionType":"git"},{"version":"b24df3e30cbf48255db866720fb71f14bf9d2f39","lessThan":"f73726b83e4756fdaa099e1bc1143293bd57ad79","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98167","source_modified_at":"2026-10-19T09:14:58.765Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","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-2026-98167","source_modified_at":"2026-10-19T09:14:58.765Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8703539d22fdbc13dd2db090ee199c3a427b8ea0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98167","source_modified_at":"2026-10-19T09:14:58.765Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"282b72f9a7ef31296c48366db4128882999cc048","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00216,"percentile":0.11395,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:44:12.731Z","modified_at":"2026-10-19T09:14:58.765Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98167","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:14:58.765Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98167","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/8703539d22fdbc13dd2db090ee199c3a427b8ea0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e78fc1d240b27349b45a0f1c3e3c2c401d7e230d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a46eb242e9eef3a3897d166748b23303c516e870"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/282b72f9a7ef31296c48366db4128882999cc048"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f73726b83e4756fdaa099e1bc1143293bd57ad79"}],"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":"2026-10-19T09:14:58.765Z","content_hash":"d536f9126661ef42752ff718273679f2725e166d3591398dffae294a3f592b6a"}}