Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox
unspecified to < 133affected
Mozilla Thunderbird
unspecified to < 133affected
Mozilla Firefox ESR
unspecified to < 128.7affected
Mozilla Thunderbird
unspecified to < 128.7affected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1899402 ↗
- https://www.mozilla.org/security/advisories/mfsa2024-63/ ↗
- https://www.mozilla.org/security/advisories/mfsa2024-67/ ↗
- https://www.mozilla.org/security/advisories/mfsa2025-09/ ↗
- https://www.mozilla.org/security/advisories/mfsa2025-10/ ↗
- https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html ↗
- https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html ↗