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Fencer Intel
critical 9.8

CVE-2018-5148 json

A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a refer…

published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16934

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.7.3 and Firefox < 59.0.2.

Patch / fix

  • Mozilla Firefox ESR 52.7.3
  • Mozilla Firefox 59.0.2
  • firefox-esr Debian 14, Debian 13, Debian 12 52.7.3esr-1

debian advisories DEBIAN-CVE-2018-5148

  • firefox Ubuntu 14.04 LTS 59.0.2+build1-0ubuntu0.14.04.1
  • firefox Ubuntu 16.04 LTS 59.0.2+build1-0ubuntu0.16.04.1
  • firefox Ubuntu 18.04 LTS 59.0.2+build1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2018-5148

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • firefox RHEL 6 52.7.3-1.el6_9
  • firefox RHEL 7 52.7.3-1.el7_5

red hat advisories RHSA-2018:1098RHSA-2018:1099

  • MozillaFirefox SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 52.7.3esr-72.27.2
  • MozillaFirefox SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 52.7.3esr-109.25.1

suse advisories SUSE-SU-2018:0907-1SUSE-SU-2018:0850-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 92.0-1.2

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-5148 updated cvss 9.8

firefox: Use-after-free in compositor potentially allows code execution

  • Red Hat Enterprise Linux 5 firefox
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) firefox 52.7.3-1.el7_5 Red Hat Enterprise Linux Client Optional (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
  • Red Hat Enterprise Linux Desktop (v. 6) firefox 52.7.3-1.el6_9 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 52.7.3-1.el6_9
    fixed: vendor fix RHSA-2018:1098
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox 52.7.3-1.el7_5 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 52.7.3-1.el6_9 Red Hat Enterprise Linux Server (v. 6) firefox 52.7.3-1.el6_9
    fixed: vendor fix RHSA-2018:1098
  • Red Hat Enterprise Linux Server (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
  • Red Hat Enterprise Linux Server Optional (v. 6) firefox 52.7.3-1.el6_9
    fixed: vendor fix RHSA-2018:1098
  • Red Hat Enterprise Linux Server Optional (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
show 5 more
  • Red Hat Enterprise Linux Workstation (v. 6) firefox 52.7.3-1.el6_9
    fixed: vendor fix RHSA-2018:1098
  • Red Hat Enterprise Linux Workstation (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
  • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 52.7.3-1.el6_9
    fixed: vendor fix RHSA-2018:1098
  • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 52.7.3-1.el7_5
    fixed: vendor fix RHSA-2018:1099
  • Red Hat Enterprise Linux 8 firefox
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.92% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Mozilla Firefox ESR
  • Mozilla Firefox

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.