GHSA-qw4p-vq2p-9gqcMediumCVSS 3.3
FFmpeg through 9.0.2 contains an information disclosure vulnerability in ff_mlz_decompression()...
🔗 CVE IDs covered (1)
📋 Description
FFmpeg through 9.0.2 contains an information disclosure vulnerability in ff_mlz_decompression() in libavcodec/mlz.c, which accepts string codes beyond the dictionary's next free code. Attackers can supply a crafted MPEG-4 ALS file with malformed initial or out-of-range codes to copy uninitialized heap bytes into decoded audio output.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-125103
- https://github.com/FFmpeg/FFmpeg/commit/db98784a72600a94f7ebd5f016a37e01a505c27b
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mlz.c#L161
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-heap-disclosure-via-mlz-decompressor-in-als-decoder
- https://github.com/advisories/GHSA-qw4p-vq2p-9gqc