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HIGH

Memory corruption in JIT UpdateRegExpStatics

Published Sep 11, 2023

Description

When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Affected products

Remediation

Red Hat statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

References (10)

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED
Assigner mozilla
Published Sep 11, 2023
Updated Dec 18, 2025
Reserved Aug 29, 2023

CISA Vulnrichment

Updated Sep 19, 2024

NVD

Status Modified
Modified Jun 17, 2026

Red Hat

Severity Important
Public date Aug 29, 2023
Bugzilla 2236075

ENISA EUVD

Assigner mozilla
Published Sep 11, 2023
Updated Dec 18, 2025

GitHub

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