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Vulnerability record · CVE-2017-1000460 · published 3 January 2018

CVE-2017-1000460: Libav null pointer dereference vulnerability

Libav · Libav

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.

6.5 CVSS 3.0 Medium EPSS 0.49% · top 59.9% CWE-476 · NULL pointer dereference
6.5CVSS 3.0 base score, v2 4.3
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-1000460), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.