Description
Fraunhofer HHI VVdeC before 3.2.1 contains an out-of-bounds read vulnerability that allows attackers to crash the decoder by supplying bitstreams with overlapping slice CTU coverage. Attackers can code a CTU in a second slice so a bi-predicted BDOF coding unit carries a negative reference index, causing Slice::getRefPic to read outside m_apcRefPicList and crash decoding.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| fraunhoferhhi | vvdec | < 3.2.1 | 3.2.1 |
References
- https://github.com/fraunhoferhhi/vvdec/issues/402 issue-tracking
- https://github.com/fraunhoferhhi/vvdec/commit/6e4b907ef5ab9db390b1293ba1ad5d7dd0a67e3f patch
- https://github.com/fraunhoferhhi/vvdec/commit/32b842c10bf024f09bc7cf1445fa6f8a987422ca patch
- https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/InterPrediction.cpp#L609-L631 technical-description
- https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2645 technical-description
- https://github.com/fraunhoferhhi/vvdec product
- VulnCheck Advisory: Fraunhofer HHI VVdeC before 3.2.1 Out-of-Bounds Read via Slice::getRefPic third-party-advisory