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Merge pull request #3917 from embhorn/zd11959

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Sanity check sockfd max value
This commit is contained in:
David Garske
2021-04-05 11:50:13 -07:00
committed by GitHub
parent 7935b7c485 23bd46bac6
commit 6b46669641
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;
#endif
if ((sockfd < 0) || (sockfd >= FD_SETSIZE)) {
WOLFSSL_MSG("socket fd out of FDSET range");
return -1;
}
FD_ZERO(&rfds);
FD_SET(sockfd, &rfds);
wfds = rfds;