vpcd: added more input checking (#328)

May fix unstability issues #326 #324 (cherry picked from commit 7c949d1ec0e40ca2aabf92192cdf9f66a4a7a0bf)
2026-03-12 21:46:29 +01:00
parent 0f84236f4a
commit d9c873dec3
6 changed files with 37 additions and 26 deletions
--- a/virtualsmartcard/win32/VivoKeySmartReader/TcpIpReader.cpp
+++ b/virtualsmartcard/win32/VivoKeySmartReader/TcpIpReader.cpp
@@ -107,6 +107,7 @@ bool TcpIpReader::QueryATR(BYTE *ATR,DWORD *ATRsize,bool reset) {
 	}
 	if (size==0)
 		return false;
+	size=min(size,*ATRsize);
 	if ((read=recv(AcceptSocket,(char*)ATR,size,MSG_WAITALL))<=0) {
 		::shutdown(AcceptSocket,SD_BOTH);
 		AcceptSocket=NULL;