CVE-2025-8027
On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 141.0 |
| mozilla / thunderbird | - | 141.0 |
| mozilla / thunderbird | - | 128.13.0 |
| mozilla / thunderbird | 140.0 | 140.1.0 |
| mozilla / firefox | 140.0 | 140.1.0 |
| mozilla / firefox | - | 115.26.0 |
| mozilla / firefox | 128.0 | 128.13.0 |
- https://bugzilla.mozilla.org/show_bug.cgi?id=1968423
- https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html
- https://www.mozilla.org/security/advisories/mfsa2025-56/
- https://www.mozilla.org/security/advisories/mfsa2025-57/
- https://www.mozilla.org/security/advisories/mfsa2025-58/
- https://www.mozilla.org/security/advisories/mfsa2025-59/
- https://www.mozilla.org/security/advisories/mfsa2025-61/
- https://www.mozilla.org/security/advisories/mfsa2025-62/
- https://www.mozilla.org/security/advisories/mfsa2025-63/
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