{"id":"CVE-2024-56431","details":"oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift. NOTE: this is disputed by third parties because there is no evidence of a security impact, e.g., an application would not crash.","modified":"2026-10-22T15:59:40.977172289Z","published":"2024-12-25T00:00:00Z","related":["SUSE-SU-2025:1287-1","SUSE-SU-2025:1288-1","SUSE-SU-2025:1340-1","SUSE-SU-2025:1365-1","openSUSE-SU-2025:0147-1","openSUSE-SU-2025:14957-1","openSUSE-SU-2025:15002-1","openSUSE-SU-2025:15009-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56431.json","cna_assigner":"mitre","isDisputed":true},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/04/25/4"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/04/25/6"},{"type":"WEB","url":"https://github.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c#L193"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2025/04/25/6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56431.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56431"},{"type":"REPORT","url":"https://github.com/xiph/theora/issues/17#issuecomment-2480630603"},{"type":"PACKAGE","url":"https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/xiph/theora","events":[{"introduced":"0"},{"fixed":"8e4808736e9c181b971306cc3f05df9e61354004"}],"database_specific":{"extracted_events":[{"source":"DESCRIPTION","range":[{"introduced":"0"},{"last_affected":"1.0"}]},{"cpe":"cpe:2.3:a:xiph:theora:*:*:*:*:*:*:*:*","range":[{"introduced":"0"},{"fixed":"1.2.0"}],"source":"CPE_RANGE"}]}}],"versions":["v1.2.0beta1","v1.2.0alpha1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56431.json","vanir_signatures":[{"id":"CVE-2024-56431-5fd57ccd","signature_type":"Line","signature_version":"v1","source":"https://github.com/xiph/theora/commit/8e4808736e9c181b971306cc3f05df9e61354004","target":{"file":"lib/internal.h"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["116269864363932077015583535569590980136","33352859868732071628436217485916996324","192476187473382053145762568385643970113","112157494868063702721238919972890642378"]}}],"vanir_signatures_modified":"2026-10-22T15:59:40Z"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}