From e5ca9a7e4a469ca3bdf9778d8161dcfbfa835625 Mon Sep 17 00:00:00 2001
From: Junior Martinez <67972863+jmartinez-silabs@users.noreply.github.com>
Date: Tue, 16 Apr 2024 15:18:28 -0400
Subject: [PATCH] Add Null check for a function pointer that might not be set
 (#184) (#185)

It is possible that the pkinfo of the used pk contect is uninitialized. Add a check to make sure it has a free function before calling it
---
 matter/mbedtls/tinycrypt/src/pk.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/matter/mbedtls/tinycrypt/src/pk.c b/matter/mbedtls/tinycrypt/src/pk.c
index f498935ee8..6bfc165a65 100644
--- a/matter/mbedtls/tinycrypt/src/pk.c
+++ b/matter/mbedtls/tinycrypt/src/pk.c
@@ -95,8 +95,9 @@ void mbedtls_pk_free(mbedtls_pk_context *ctx) {
   if (ctx == NULL)
     return;
 
-  if (ctx->pk_info != NULL)
+  if ((ctx->pk_info != NULL) && (ctx->pk_info->ctx_free_func != NULL)) {
     ctx->pk_info->ctx_free_func(ctx->pk_ctx);
+  }
 
   mbedtls_platform_zeroize(ctx, sizeof(mbedtls_pk_context));
 }