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Sanity check sockfd

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Eric Blankenhorn
2021-03-25 09:45:51 -05:00
parent 3accd4dd86
commit 23bd46bac6
1 changed files with 5 additions and 0 deletions
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5
src/wolfio.c
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@ -800,6 +800,11 @@ int wolfIO_Send(SOCKET_T sd, char *buf, int sz, int wrFlags)
nfds = (int)sockfd + 1; nfds = (int)sockfd + 1;
#endif #endif
if ((sockfd < 0) || (sockfd >= FD_SETSIZE)) {
WOLFSSL_MSG("socket fd out of FDSET range");
return -1;
}
FD_ZERO(&rfds); FD_ZERO(&rfds);
FD_SET(sockfd, &rfds); FD_SET(sockfd, &rfds);
wfds = rfds; wfds = rfds;