Process crash via negative audio sample count
Published Apr 19, 2024 · Updated Jun 6, 2025
Improper input validation in FFmpeg n6.1-3-g466799d4f5 allows local users to crash media processing via afwtdn-filtered audio. During EOF handling, libavfilter/af_afwtdn.c subtracts excess padding from out->nb_samples without clamping the result, then passes the negative sample count to av_samples_set_silence. Exploitation requires control of audio processed by the afwtdn filter and an EOF state with excess padding; the demonstrated consequence is termination of the FFmpeg process.
Summary
What happened
Improper input validation in FFmpeg n6.1-3-g466799d4f5 allows local users to crash media processing via afwtdn-filtered audio. During EOF handling, libavfilter/af_afwtdn.c subtracts excess padding from out->nb_samples without clamping the result, then passes the negative sample count to av_samples_set_silence. Exploitation requires control of audio processed by the afwtdn filter and an EOF state with excess padding; the demonstrated consequence is termination of the FFmpeg process.
The record
- CVE
- CVE-2023-50007
- Published
- Apr 19, 2024
- Updated
- Jun 6, 2025
- Vendor
- FFmpeg
- Product
- FFmpeg
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 19, 2024CVE publishedPublication date reported by the CVE source.
- Jun 6, 2025Record updatedLatest update available in the CVE record.
Exploitability
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