{"schema":"threatline.record/2","record":{"id":"CVE-2026-17591","aliases":[],"summary":"Libarchive: libarchive: use-after-free via aliased mac metadata copy","details":"A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.","categories":["Operating systems"],"product":"Red Hat Hardened Images","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"version":"3.8.9-2.1.hum1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","source_modified_at":"2026-10-19T21:28:22.621Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":3.6,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.0011,"percentile":0.01241,"score_date":"2026-10-23"},"published_at":"2026-10-16T22:03:40.603Z","modified_at":"2026-10-19T21:28:22.621Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-17591","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T21:28:22.621Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-17591","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/errata/RHSA-2026:77775","tags":["vendor-advisory","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-17591","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554209","tags":["issue-tracking","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://github.com/libarchive/libarchive/pull/3318"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-19T21:27:56.253609Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T21:28:22.621Z","content_hash":"a5032f1760e66a02049fe36f937f0659585ef4bdb65ffebca9991aa16b0e3ea8"}}