Medium
Security advisory
The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-7557
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:23 UTC · Revision 1
Source evidence
The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.
osv:CVE-2018-7557
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2018-7557",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-7557",
"summary": "The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.",
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"modified": "2026-10-24T14:20:19.741210398Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html",
"https://security.gentoo.org/glsa/202003-65",
"https://www.debian.org/security/2018/dsa-4249",
"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96",
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"provider_metadata": {
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"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443526,
"published_at": "2018-02-28T07:29:00.463+00:00"
}