FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in the Cirrus Logic AccuPak (CLJR) decoder in libavcodec/cljrdec.c because decode_frame() ignores init_get_bits() failure. Attackers can supply a crafted AVI file with a 2^28-byte CLJR frame that overflows the bit count, causing reads from a NULL buffer and crashing the process.

FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in the Cirrus Logic AccuPak (CLJR) decoder in libavcodec/cljrdec.c because decode_frame() ignores init_get_bits() failure. Attackers can supply a crafted AVI file with a 2^28-byte CLJR frame that overflows the bit count, causing reads from a NULL buffer and crashing the process.

Ein Angreifer kann mehrere Schwachstellen in ffmpeg ausnutzen, um einen Denial-of-Service-Zustand auszulösen, Daten zu manipulieren oder offenzulegen, Sicherheitsmaßnahmen zu umgehen, Speicherbeschädigungen zu verursachen und möglicherweise beliebigen Code auszuführen.