libavcodec in FFmpeg 4.0 may trigger a NULL pointer dereference if the studio profile is incorrectly detected while converting a crafted AVI file to MPEG4, leading to a denial of service, related to idctdsp.c and mpegvideo.c.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ffmpeg | Ffmpeg | 4.0 (including) | 4.0 (including) |
| Ffmpeg | Ubuntu | artful | * |