Описание
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Use-after-free in the SVG component
Отчет
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Меры по смягчению последствий
--- CME Mitigation Guidance (2026-11-03) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to isolate or restrict processing of untrusted SVG content in the Firefox rendering engine: upgrade to Firefox 159 and Firefox ESR 153.6 (or the corresponding fixed Red Hat builds), which resolves the use-after-free condition triggered during SVG element rendering and processing, closing crafted SVG documents. Until patched, this is a concern on all platforms where users open untrusted content or navigate to malicious web pages in affected Firefox installations, so restrict user interaction with untrusted websites and avoid opening untrusted SVG files in the browser. As a compensating measure, ensure Address Space Layout Randomization is enforced on Firefox processes to hinder predicting memory locations needed for reliable code execution. These controls limit blast radius and contain exploitation, but they do not fix the underlying use-after-free defect — apply the upstream patch to fully remediate. Highest-impact CME: CME-101 ASLR (Address Space Layout Randomization) (medium)
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | firefox | Affected | ||
| Red Hat Enterprise Linux 10 | rhel10/firefox-flatpak | Affected | ||
| Red Hat Enterprise Linux 10 | rhel10/thunderbird-flatpak | Affected | ||
| Red Hat Enterprise Linux 10 | thunderbird | Affected | ||
| Red Hat Enterprise Linux 6 | firefox | Out of support scope | ||
| Red Hat Enterprise Linux 6 | thunderbird | Out of support scope | ||
| Red Hat Enterprise Linux 7 | firefox | Affected | ||
| Red Hat Enterprise Linux 7 | thunderbird | Out of support scope | ||
| Red Hat Enterprise Linux 8 | firefox | Affected | ||
| Red Hat Enterprise Linux 8 | thunderbird | Affected |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Use-after-free in the SVG component. This vulnerability was fixed in F ...
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
EPSS
7.5 High
CVSS3