CVE-2019-17539

Critical

Description

In FFmpeg before 4.2, avcodec_open2 in libavcodec/utils.c allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Ffmpeg

PublishedOct 14, 2019

First seenOct 14, 2019

How to fix

Update

ffmpeg ffmpeg3.4.7, 4.0.5, 4.1.5 or later

Vendor advisories

security.gentoo.org/glsa/202003-65
debian.org/security/2020/dsa-4722
usn.ubuntu.com/4431-1/

Affected products

Product	Affected versions	Fixed in
ffmpeg ffmpeg	v < 3.4.7, 4.0 ≤ v < 4.0.5, 4.1 ≤ v < 4.1.5	3.4.7, 4.0.5, 4.1.5
debian debian_linux	9.0, 10.0	—
canonical ubuntu_linux	16.04, 18.04, 20.04	—

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