CVE-2017-1000460

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-01-03 · updated 2026-06-17
Weakness: CWE-476

Description

In line libavcodec/h264dec.c:500 in libav(v13_dev0), ffmpeg(n3.4), chromium(56 prior Feb 13, 2017), the return value of init_get_bits is ignored and get_ue_golomb(&gb) is called on an uninitialized get_bits context, which causes a NULL deref exception.

Affected products

FFmpeg: 3.4
Google Chrome: through 56.0.2924
libav: 13_dev0

References

https://bugzilla.libav.org/show_bug.cgi?id=952
https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/8e313ca08800178efce00045e07dc494d437b70c
https://lists.debian.org/debian-lts-announce/2019/03/msg00041.html
https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html
https://bugzilla.libav.org/show_bug.cgi?id=952
https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/8e313ca08800178efce00045e07dc494d437b70c
https://lists.debian.org/debian-lts-announce/2019/03/msg00041.html
https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html

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