CVE-2015-8661

high
Published 2015-12-24 ยท Modified 2026-05-06
CVSS v3
8.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
8.3

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.

Predictions

Exploit likelihood
89%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 7:2.8.3-1
sid Fixed 7:2.8.3-1
forky Fixed 7:2.8.3-1
bullseye Fixed 7:2.8.3-1
bookworm Fixed 7:2.8.3-1

Application impact

VendorProductVersionsFixed
ffmpegffmpeg{"endIncluding":"2.8.2"}

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.