Debian/firefox-esr: critical 9.8
A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.1
Action: Upgrade firefox-esr to 128.12.0esr-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 128.12.0esr-1 | - |
Fixed versions
| 128.12.0esr-1 |
Sources
- osv: DEBIAN-CVE-2025-6424#Debian:13/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2025-6424
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