Description
libsodium before ad3004e, in atypical use cases involving certain custom cryptography or untrusted data to crypto_core_ed25519_is_valid_point, mishandles checks for whether an elliptic curve point is valid because it sometimes allows points that aren't in the main cryptographic group.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
libsodium libsodium
Default version status: unaffected
0 to < ad3004ec8731730e93fcfbbc824e67eadc1c1baeaffected
References
- https://github.com/jedisct1/libsodium/commit/ad3004ec8731730e93fcfbbc824e67eadc1c1bae ↗
- https://00f.net/2025/12/30/libsodium-vulnerability/ ↗
- https://news.ycombinator.com/item?id=46435614 ↗
- https://ianix.com/pub/ed25519-deployment.html ↗
- https://github.com/pyca/pynacl/issues/920 ↗
- https://github.com/pyca/pynacl/commit/ecf41f55a3d8f1e10ce89c61c4b4d67f3f4467cf ↗
- https://github.com/pyca/pynacl/commit/96314884d88d1089ff5f336dba61d7abbcddbbf7 ↗
- https://lists.debian.org/debian-lts-announce/2026/01/msg00004.html ↗