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.
Problem types
Potential double-free vulnerability in PKCS#7 decryption handling
Product status
Credits
Ronald Crane
References
lists.debian.org/debian-lts-announce/2025/02/msg00006.html
lists.debian.org/debian-lts-announce/2025/02/msg00005.html
bugzilla.mozilla.org/show_bug.cgi?id=1899402
www.mozilla.org/security/advisories/mfsa2024-63/
www.mozilla.org/security/advisories/mfsa2024-67/
www.mozilla.org/security/advisories/mfsa2025-09/
www.mozilla.org/security/advisories/mfsa2025-10/
