Security Advisory

CVE-2023-6858

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-12-19 13:38:38

Last updated 2025-05-07 20:25:21

Assigner mozilla

State PUBLISHED

Description

Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

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