{"id":"CVE-2021-40576","details":"The binary MP4Box in Gpac 1.0.1 has a null pointer dereference vulnerability in the gf_isom_get_payt_count function in hint_track.c, which allows attackers to cause a denial of service.","modified":"2026-08-07T16:58:10.473730Z","published":"2022-01-13T19:15:08.407Z","references":[{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5411"},{"type":"REPORT","url":"https://github.com/gpac/gpac/issues/1904"},{"type":"FIX","url":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gpac/gpac","events":[{"introduced":"d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"},{"last_affected":"d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"},{"fixed":"ad18ece95fa064efc0995c4ab2c985f77fb166ec"}],"database_specific":{"extracted_events":[{"introduced":"1.0.1"},{"last_affected":"1.0.1"}],"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*"}}],"versions":["1.0.1","v1.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40576.json","vanir_signatures_modified":"2026-08-07T16:58:10Z","vanir_signatures":[{"source":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec","target":{"file":"src/isomedia/hint_track.c","function":"GetHintFormat"},"deprecated":false,"digest":{"function_hash":"64669718982500005998952664897227464772","length":460},"id":"CVE-2021-40576-642b86cc","signature_type":"Function","signature_version":"v1"},{"deprecated":false,"digest":{"line_hashes":["213132367431935810995875342538304866537","69422952422666335137015309587630551427","154475117685622613766551368937792949715","247987700451396011635532392404281105653"],"threshold":0.9},"id":"CVE-2021-40576-e15d50ed","signature_type":"Line","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec","target":{"file":"src/isomedia/hint_track.c"}}]}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}