A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133, Thunderbird < 133, Firefox ESR < 128.7, and Thunderbird < 128.7.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Feb 7, 2025 | Nov 26, 2024 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefox-esrUpgrade firefox | Apr 15, 2025 | Apr 13, 2025 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade dev-lang/spidermonkey.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin. | Jan 24, 2025 | Nov 26, 2024 |
| Mfsa2024 63 | — | Upgrade to Mozilla Firefox version 133.0 | Nov 27, 2024 | Nov 26, 2024 |
| Mfsa2025 09 | — | Upgrade to Mozilla Firefox ESR version 128.7Upgrade to the latest version of Mozilla Firefox | Feb 5, 2025 | Nov 26, 2024 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 128.7 | Nov 27, 2024 | Nov 26, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 26, 2024 |
| Suse | — | Upgrade mozjs128Upgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefox-develUpgrade mozjs128-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-otherUpgrade libmozjs-128-0 | Dec 5, 2025 | Feb 5, 2025 |
| Ubuntu | — | Upgrade firefox | Dec 4, 2024 | Nov 26, 2024 |
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