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Add sanity check.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2025-10-07 21:11:50 +02:00
parent de1bf3d2d4
commit d424f0dea7
1 changed files with 3 additions and 0 deletions
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src/fido/credential.c
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@@ -442,6 +442,9 @@ int credential_derive_resident(const uint8_t *cred_id, size_t cred_id_len, uint8
} }
bool credential_is_resident(const uint8_t *cred_id, size_t cred_id_len) { bool credential_is_resident(const uint8_t *cred_id, size_t cred_id_len) {
if (cred_id_len < 4 + CRED_PROTO_RESIDENT_LEN) {
return false;
}
return memcmp(cred_id + 4, CRED_PROTO_RESIDENT, CRED_PROTO_RESIDENT_LEN) == 0; return memcmp(cred_id + 4, CRED_PROTO_RESIDENT, CRED_PROTO_RESIDENT_LEN) == 0;
} }