CVE-2025-1933
On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
| Software | From | Fixed in |
|---|---|---|
| mozilla / thunderbird | 129.0 | 136.0 |
| mozilla / firefox | - | 136.0 |
| mozilla / firefox | - | 115.21.0 |
| mozilla / firefox | 116.0 | 128.8.0 |
| mozilla / thunderbird | - | 128.8 |
- https://bugzilla.mozilla.org/show_bug.cgi?id=1946004
- https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html
- https://www.mozilla.org/security/advisories/mfsa2025-14/
- https://www.mozilla.org/security/advisories/mfsa2025-15/
- https://www.mozilla.org/security/advisories/mfsa2025-16/
- https://www.mozilla.org/security/advisories/mfsa2025-17/
- https://www.mozilla.org/security/advisories/mfsa2025-18/
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