firefox: thunderbird: Out-of-bounds access when optimizing linear sums

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker could perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes...

OESA-2025-1548 firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. Security Fixes: An attacker was able to perform an out-of-bounds read or write on a JavaScript Promise object. This vulnerability affects Firefox 138.0.4, Firefox ESR 128.10.1, Firefox E...

CVE-2025-4919

Mozilla Firefox and Thunderbird are affected by an out-of-bounds read or write vulnerability in a JavaScript object . The root cause is triggered by confusing array index sizes during operations. This security flaw could potentially lead to memory corruption. Remediation is available in Firefox 1...