CVE-2018-12371

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

An integer overflow vulnerability in the Skia library when allocating memory for edge builders on some systems with at least 16 GB of RAM. This results in the use of uninitialized memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 60.1, Thunderbird < 60, and Firefox < 61.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-12371

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-12371.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201806-14

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201808-8

OS impact

OSVersionStatusFixed in
arch archfixed60.0-1
suse slesaffected
debian debiansidfixed61.0-1
debian debianbookwormfixed1:60.0-1
debian debianbullseyefixed1:60.0-1
debian debianforkyfixed1:60.0-1
debian debiantrixiefixed1:60.0-1

References

Verify integrity in audit chain (admin only). AS-IS.