The ff_vc1_mc_4mv_chroma4 function in libavcodec/vc1_mc.c in Libav 12.2 allows remote attackers to cause a denial of service (segmentation fault and application crash) or possibly have unspecified other impact via a crafted file.
The product dereferences a pointer that it expects to be valid but is NULL.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libav | Libav | 12.2 (including) | 12.2 (including) |