CVE-2018-19870

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-26 · updated 2026-06-17
Weakness: CWE-476

Description

An issue was discovered in Qt before 5.11.3. A malformed GIF image causes a NULL pointer dereference in QGifHandler resulting in a segmentation fault.

Affected products

Debian Linux: 8.0, 9.0
openSUSE Leap: 15.0
Qt: before 5.11.3 — fixed in 5.11.3

How to fix

Upgrade to a fixed version: Qt 5.11.3. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00080.html
https://access.redhat.com/errata/RHSA-2019:2135
https://access.redhat.com/errata/RHSA-2019:3390
https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
https://codereview.qt-project.org/#/c/235998/
https://lists.debian.org/debian-lts-announce/2019/01/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html
https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html
https://usn.ubuntu.com/4003-1/
https://www.debian.org/security/2019/dsa-4374
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00080.html
https://access.redhat.com/errata/RHSA-2019:2135

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