[FS] potential fix for heap poisoning.

FujiNetWIFI · Aug 13, 2023 · b45cf05 · b45cf05
1 parent 6f72c91
commit b45cf05
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/lib/network-protocol/FS.cpp b/lib/network-protocol/FS.cpp
@@ -190,7 +190,7 @@ bool NetworkProtocolFS::read(unsigned short len)
 
 bool NetworkProtocolFS::read_file(unsigned short len)
 {
- uint8_t *buf = (uint8_t *)malloc(len);
+ buf = (uint8_t *)malloc(len);
 
  Debug_printf("NetworkProtocolFS::read_file(%u)\r\n", len);
 

diff --git a/lib/network-protocol/FS.h b/lib/network-protocol/FS.h
@@ -30,6 +30,11 @@ class NetworkProtocolFS : public NetworkProtocol
  */
  bool rmdir_implemented = false;
 
+ /**
+ * Internal temporary buffer for read
+ */
+ uint8_t *buf;
+
  /**
  * @brief ctor
  * @param rx_buf pointer to receive buffer