{"action":"Upgrade gpac to 1.0.1+dfsg1-4+deb11u2 or later.","affected":[{"fixed":"1.0.1+dfsg1-4+deb11u2","introduced":"0"}],"component":"gpac","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:11","exploited":false,"fixed_versions":["1.0.1+dfsg1-4+deb11u2"],"id":"tcs_01M5NFZ6FAC51YXN0TJ3DC2V5Z","modified_at":"2026-08-27T23:04:10.043724121Z","published_at":"2022-01-12T22:15:07.807Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-40563","https://security-tracker.debian.org/tracker/CVE-2021-40563"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-40563","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-40563"}],"summary":"A Segmentation fault exists casued by null pointer dereference exists in Gpac through 1.0.1 via the naludmx_create_avc_decoder_config function in reframe_nalu.c when using mp4box, which causes a denia"}