FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in tqi_decode_frame() in libavcodec/eatqi.c, which ignores init_get_bits() failure after an integer overflow. Attackers can supply a crafted EA file with a pIQT chunk carrying a 2^28-byte payload to crash the process, causing denial of service.
https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-null-pointer-dereference-in-ea-tqi-decoder
https://github.com/FFmpeg/FFmpeg/commit/5d7b743bdfb724df21fd43a3d7f3258382eb578c
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/eatqi.c#L154
https://github.com/FFmpeg/FFmpeg
Published: 2026-11-09
Updated: 2026-11-10
Base Score: 4.9
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Severity: Medium
Base Score: 6.8
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00182