High severity8.3NVD Advisory· Published Dec 24, 2015· Updated Jun 17, 2026

CVE-2015-8661

Description

The h264_slice_header_init function in libavcodec/h264_slice.c in FFmpeg before 2.8.3 does not validate the relationship between the number of threads and the number of slices, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted H.264 data.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

FFmpeg/Ffmpeg2 versions
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*range: <=2.8.2
- (no CPE)range: <2.8.3
osv-coords
pkg:rpm/opensuse/ffmpeg-4&distro=openSUSE%20Tumbleweed
Range: < 4.4-5.2

Patches

Vulnerability mechanics

References

git.videolan.orgnvd
lists.opensuse.org/opensuse-security-announce/2016-01/msg00004.htmlnvd
www.securitytracker.com/id/1034539nvd
lists.debian.org/debian-lts-announce/2018/12/msg00009.htmlnvd

News mentions

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cvss	0.540
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000