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-rw-r--r--crypto/bio/b_sock.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/bio/b_sock.c b/crypto/bio/b_sock.c
index f5d2a627cb..79f7743b2f 100644
--- a/crypto/bio/b_sock.c
+++ b/crypto/bio/b_sock.c
@@ -387,6 +387,8 @@ int BIO_socket_wait(int fd, int for_read, time_t max_time)
struct timeval tv;
time_t now;
+ if (fd < 0 || fd >= FD_SETSIZE)
+ return -1;
if (max_time == 0)
return 1;