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- Subject: Openssl: handle NULL in jose_openssl_jwk_from_EC_KEY gracefully (#172)
- Origin: upstream, commit v14-7-g5aaaaf6 <https://github.com/latchset/jose/commit/v14-7-g5aaaaf6>
- Author: Ahmad Fatoum <ahmad@a3f.at>
- Date: Wed Jul 9 14:21:37 2025 +0200
- We already check that the RSA *key is not NULL in
- jose_openssl_jwk_from_RSA(), but fail to do so for EC_KEY *key in
- jose_openssl_jwk_from_EC_KEY().
- But EVP_PKEY_get0_EC_KEY() can return NULL too, e.g., if
- the EVP_PKEY comes from an OpenSSL provider that is not creating a
- keymgmt instance for a public key and the default provider is not
- loaded[1].
- Instead of crashing inside OpenSSL when we pass a NULL pointer to
- EC_KEY_get0_private_key(), detect this case and return gracefully.
- [1]: https://github.com/openssl/openssl/discussions/25679
- Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
- --- a/lib/openssl/jwk.c
- +++ b/lib/openssl/jwk.c
- @@ -140,6 +140,9 @@
- json_t *
- jose_openssl_jwk_from_EC_KEY(jose_cfg_t *cfg, const EC_KEY *key)
- {
- + if (!key)
- + return NULL;
- +
- return jose_openssl_jwk_from_EC_POINT(
- cfg,
- EC_KEY_get0_group(key),
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