CVE-2026-125067

Description

FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in vble_decode_frame() in libavcodec/vble.c because it ignores init_get_bits() failure on oversized packets. Attackers can supply a crafted AVI file with a 268435452-byte VBLE frame, causing reads from a NULL bit reader buffer that crash the process.

Affected Platforms

Weakness Type

CWE-252

References

• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25704
• https://github.com/FFmpeg/FFmpeg
• https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vble.c#L139
• https://github.com/FFmpeg/FFmpeg/commit/1206df65e54b6e9c01459c7cd9a95f9bde2736d7
• https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-vble-decoder-null-poin…