commit 9ac3e23f5dff2787bb82c504166b60d03f0a94c1
author Troy-Butler <squintik@outlook.com> Fri Mar 22 14:46:04 2024 -0400
committer Troy-Butler <squintik@outlook.com> Fri Mar 22 14:46:04 2024 -0400
tree e3e86a6129c7e6fbc2abcf62bf81532feba977cd
parent 611f899c0c9d397baedfaec34ea0861ad2543991

Fix NULL argument handling in mbedtls_xxx_free() functions

Signed-off-by: Troy-Butler <squintik@outlook.com>

library/nist_kw.c

diff --git a/library/nist_kw.c b/library/nist_kw.c
index f15425b..8faafe4 100644
--- a/library/nist_kw.c
+++ b/library/nist_kw.c
@@ -102,6 +102,10 @@
  */
 void mbedtls_nist_kw_free(mbedtls_nist_kw_context *ctx)
 {
+    if (ctx == NULL) {
+        return;
+    }
+
     mbedtls_cipher_free(&ctx->cipher_ctx);
     mbedtls_platform_zeroize(ctx, sizeof(mbedtls_nist_kw_context));
 }