Fix potential memory leak in PKCS12_add_key_ex()

p8 is allocated using EVP_PKEY2PKCS8(), but when PKCS8_add_keyusage()
fails this memory is not freed. Fix this by adding a call to
PKCS8_PRIV_KEY_INFO_free().

Reviewed-by: Frederik Wedel-Heinen <fwh.openssl@gmail.com>
Reviewed-by: Hugo Landau <hlandau@devever.net>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25818)

(cherry picked from commit f822a4866894ed8a752ad93c228fb76a8bb206e8)

diff --git a/crypto/pkcs12/p12_crt.c b/crypto/pkcs12/p12_crt.c
index 1a48e5c611da5c936a7d48ddba8f2cdd8d5fbbc8..8354b7c2ea11af8db4eb743c9a88a937a23d68ce 100644 (file)
--- a/crypto/pkcs12/p12_crt.c
+++ b/crypto/pkcs12/p12_crt.c
@@ -210,8 +210,10 @@ PKCS12_SAFEBAG *PKCS12_add_key_ex(STACK_OF(PKCS12_SAFEBAG) **pbags,
     /* Make a PKCS#8 structure */
     if ((p8 = EVP_PKEY2PKCS8(key)) == NULL)
         goto err;
-    if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
+    if (key_usage && !PKCS8_add_keyusage(p8, key_usage)) {
+        PKCS8_PRIV_KEY_INFO_free(p8);
         goto err;
+    }
     if (nid_key != -1) {
         /* This call does not take ownership of p8 */
         bag = PKCS12_SAFEBAG_create_pkcs8_encrypt_ex(nid_key, pass, -1, NULL, 0,