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-rw-r--r--src/posix-io.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/posix-io.c b/src/posix-io.c
index f3361534..258e8ea5 100644
--- a/src/posix-io.c
+++ b/src/posix-io.c
@@ -604,6 +604,12 @@ _gpgme_io_select (struct io_select_fd_s *fds, size_t nfds, int nonblock)
continue;
if (fds[i].for_read)
{
+ if (fds[i].fd >= FD_SETSIZE)
+ {
+ TRACE_END (dbg_help, " -BAD- ]");
+ gpg_err_set_errno (EBADF);
+ return TRACE_SYSRES (-1);
+ }
assert (!FD_ISSET (fds[i].fd, &readfds));
FD_SET (fds[i].fd, &readfds);
if (fds[i].fd > max_fd)
@@ -613,6 +619,12 @@ _gpgme_io_select (struct io_select_fd_s *fds, size_t nfds, int nonblock)
}
else if (fds[i].for_write)
{
+ if (fds[i].fd >= FD_SETSIZE)
+ {
+ TRACE_END (dbg_help, " -BAD- ]");
+ gpg_err_set_errno (EBADF);
+ return TRACE_SYSRES (-1);
+ }
assert (!FD_ISSET (fds[i].fd, &writefds));
FD_SET (fds[i].fd, &writefds);
if (fds[i].fd > max_fd)