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 was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade firefox | Mar 13, 2025 | Mar 4, 2025 |
| Amazon Linux Ami 2 | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbird | Apr 2, 2025 | Mar 4, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Mar 10, 2025 | Mar 4, 2025 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esrUpgrade librewolf | Apr 5, 2025 | Apr 3, 2025 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade dev-lang/spidermonkey. | May 13, 2025 | Mar 4, 2025 |
| Mfsa2025 14 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 136.0 | Mar 5, 2025 | Mar 4, 2025 |
| Mfsa2025 15 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.21 | Mar 5, 2025 | Mar 4, 2025 |
| Mfsa2025 16 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.8 | Mar 5, 2025 | Mar 4, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 128.8 | Mar 5, 2025 | Mar 4, 2025 |
| Oracle_linux | — | Upgrade firefoxUpgrade firefox-x11 | Mar 10, 2025 | Mar 4, 2025 |
| Redhat_linux | — | Upgrade firefoxUpgrade firefox-x11Upgrade firefox-debugsourceUpgrade firefox-debuginfoNo solution exists | Mar 10, 2025 | Mar 4, 2025 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade firefox | Jul 31, 2025 | Jul 29, 2025 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-develUpgrade mozjs128Upgrade mozillafirefox-branding-upstreamUpgrade libmozjs-128-0Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade mozjs128-devel | Mar 6, 2025 | Mar 4, 2025 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Mar 10, 2025 | Mar 4, 2025 |
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