Commit e4551d81c3 for openssl.org

commit e4551d81c3239c31fd2c60ddb5926cca56c73a6d
Author: Neil Horman <nhorman@openssl.org>
Date:   Fri Jun 26 11:17:09 2026 -0400

    use evp_keyexch_free in evp_keyexch_from_algorithm

    evp_keyexch_from_algorithm, in its error path frees the allocated kem
    with EVP_KEM_free, but thats a no-op now, and we actually want to
    free it to avoid leaks, so we should use evp_keyexch_free (the internal
    function that acutally does free the alg) instead.

    Fixes https://scan5.scan.coverity.com/#/project-view/60762/10222?selectedIssue=1695455

    Reviewed-by: Saša Nedvědický <sashan@openssl.org>
    Reviewed-by: Eugene Syromiatnikov <esyr@openssl.org>
    Reviewed-by: Norbert Pocs <norbertp@openssl.org>
    MergeDate: Wed Jul  1 15:32:18 2026
    (Merged from https://github.com/openssl/openssl/pull/31748)

diff --git a/crypto/evp/exchange.c b/crypto/evp/exchange.c
index 1d05f8e857..535493c244 100644
--- a/crypto/evp/exchange.c
+++ b/crypto/evp/exchange.c
@@ -169,7 +169,7 @@ static void *evp_keyexch_from_algorithm(int name_id,
     return exchange;

 err:
-    EVP_KEYEXCH_free(exchange);
+    evp_keyexch_free(exchange);
     return NULL;
 }