Description · from the CVE record

A heap out-of-bounds memory write exists in FFMPEG since version 5.1. The size calculation in `build_open_gop_key_points()` goes through all entries in the loop and adds `sc->ctts_data[i].count` to `sc->sample_offsets_count`. This can lead to an integer overflow resulting in a small allocation with `av_calloc()`. An attacker can cause remote code execution via a malicious mp4 file. We recommend upgrading past commit c953baa084607dd1d84c3bfcce3cf6a87c3e6e05

Affected

ProductAffectedFixed inSource
FFMPEG5.1 – < unspecifiedunspecifiedCNA
FFMPEGab77b878f1205225c6de1370fb0e998dbcc8bc69 – < unspecifiedunspecifiedCNA
FFMPEGunspecified – < c953baa084607dd1d84c3bfcce3cf6a87c3e6e05c953baa084607dd1d84c3bfcce3cf6a87c3e6e05CNA

Scores by source

Google (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/FFmpeg/FFmpeg/commit/c953baa084607dd1d84c3bfcce3cf6a87c3e6e05