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Fencer Intel
high 8.8

CVE-2019-11338 json

libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denia…

published 7y ago modified 4mo ago also EUVD-2019-3019

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

Patch / fix

  • ffmpeg Debian 14, Debian 13, Debian 12 7:4.1.3-1

debian advisories DEBIAN-CVE-2019-11338

  • ffmpeg Ubuntu 16.04 LTS 7:2.8.17-0ubuntu0.1
  • ffmpeg Ubuntu 18.04 LTS 7:3.4.6-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-11338

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ffmpeg-4 openSUSE Tumbleweed 4.4-5.2
  • ffmpeg-4 Package Hub 15 SP1, Package Hub 15, Package Hub 12 SP2 +1 more 4.2.1-bp151.5.3.1

opensuse advisories openSUSE-SU-2024:10754-1openSUSE-SU-2020:0024-1

  • ffmpeg Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 4.1.3-r0
  • ffmpeg Alpine 3.8 3.4.6-r0
  • ffmpeg4 Alpine 3.22, Alpine 3.21, Alpine 3.20 +4 more 4.1.3-r0

alpine advisories ALPINE-CVE-2019-11338

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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Exploit prediction

2.35% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.