Critical
Security advisory
adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-38171
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:29 UTC · Revision 1
Source evidence
adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.
osv:CVE-2021-38171
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2021-38171",
"method": "structured",
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"title": "CVE-2021-38171",
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"source": "https://github.com/ffmpeg/ffmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6",
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{
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"target": {
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"modified": "2026-10-24T14:51:09.136669379Z",
"provider": "osv",
"references": [
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"https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html",
"https://security.gentoo.org/glsa/202312-14",
"https://www.debian.org/security/2021/dsa-4990",
"https://www.debian.org/security/2021/dsa-4998",
"https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6"
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"source_id": "core-osv",
"document_id": 443871,
"published_at": "2021-08-21T17:15:07.7+00:00"
}