NULL Pointer Dereference Affecting firefox package, versions <0:128.13.0-1.el9_4


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.35% (28th percentile)

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  • Snyk IDSNYK-RHEL9-FIREFOX-11336366
  • published30 Jul 2025
  • disclosed22 Jul 2025

Introduced: 22 Jul 2025

CVE-2025-8033  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:9 firefox to version 0:128.13.0-1.el9_4 or higher.
This issue was patched in RHSA-2025:12044.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

CVSS Base Scores

version 3.1