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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2019-08-07 20:02:46 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2019-08-07 20:02:46 +0000 |
| commit | 42398166645c00f43738696d33277e220123323e (patch) | |
| tree | 2348a5d0f63905a2fcffb04d438ae7f8d295626f | |
| parent | d69644de85148f56efeed4259a783881e2a1bddc (diff) | |
| download | skalibs-42398166645c00f43738696d33277e220123323e.tar.xz | |
iopause_select: add protection against UB in FD_SET
| -rw-r--r-- | src/libstddjb/iopause_select.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstddjb/iopause_select.c b/src/libstddjb/iopause_select.c index 8b8479b..a98767c 100644 --- a/src/libstddjb/iopause_select.c +++ b/src/libstddjb/iopause_select.c @@ -35,6 +35,7 @@ int iopause_select (iopause_fd *x, unsigned int len, tain_t const *deadline, tai x[i].revents = 0 ; if (x[i].fd >= 0) { + if (x[i].fd >= FD_SETSIZE) return (errno = EMFILE, -1) ; if (x[i].fd >= nfds) nfds = x[i].fd + 1 ; if (x[i].events & IOPAUSE_READ) FD_SET(x[i].fd, &rfds) ; if (x[i].events & IOPAUSE_WRITE) FD_SET(x[i].fd, &wfds) ; |