crypto : asymmetric_keys : verify_pefile:zero memory content before freeing

Signed-off-by: NLoganaden Velvindron <logan@hackers.mu>
Signed-off-by: NYasir Auleear <yasirmx@hackers.mu>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NJames Morris <james.l.morris@oracle.com>

crypto/asymmetric_keys/verify_pefile.c

@@ -381,7 +381,7 @@ static int pefile_digest_pe(const void *pebuf, unsigned int pelen,
 	}
 
 error:
-	kfree(desc);
+	kzfree(desc);
 error_no_desc:
 	crypto_free_shash(tfm);
 	kleave(" = %d", ret);
@@ -450,6 +450,6 @@ int verify_pefile_signature(const void *pebuf, unsigned pelen,
 	ret = pefile_digest_pe(pebuf, pelen, &ctx);
 
 error:
-	kfree(ctx.digest);
+	kzfree(ctx.digest);
 	return ret;
 }