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| author | Werner Koch <[email protected]> | 2025-07-17 07:13:41 +0000 |
|---|---|---|
| committer | Werner Koch <[email protected]> | 2025-07-17 07:13:41 +0000 |
| commit | 4ae81d9c44ebb47f654cc4b03ce5a5706d8dd4a6 (patch) | |
| tree | b56aca85fa85242a1843f1a256bd6a7bd59fb02a | |
| parent | agent: Fix for smartcard decryption returning x-coordinate only. (diff) | |
| download | gnupg-4ae81d9c44ebb47f654cc4b03ce5a5706d8dd4a6.tar.gz gnupg-4ae81d9c44ebb47f654cc4b03ce5a5706d8dd4a6.zip | |
* agent/divert-scd.c (agent_card_ecc_kem): Add extra robustness check
for len==0.
| -rw-r--r-- | agent/divert-scd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/agent/divert-scd.c b/agent/divert-scd.c index 7e0d8eccb..15d1abd8d 100644 --- a/agent/divert-scd.c +++ b/agent/divert-scd.c @@ -517,7 +517,7 @@ agent_card_ecc_kem (ctrl_t ctrl, const unsigned char *ecc_ct, if (len == ecc_point_len) memcpy (ecc_ecdh, ecdh, len); - else if ((len - 1) * 2 == ecc_point_len - 1 && ecdh[0] == 0x02) + else if (len && (len - 1) * 2 == ecc_point_len - 1 && ecdh[0] == 0x02) { /* It's x-coordinate-only (compressed) point representation. */ memcpy (ecc_ecdh, ecdh, len); |