diff options
Diffstat (limited to 'libraries/base/cbits/inputReady.c')
| -rw-r--r-- | libraries/base/cbits/inputReady.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libraries/base/cbits/inputReady.c b/libraries/base/cbits/inputReady.c index 51f278feb1..dac9d9b524 100644 --- a/libraries/base/cbits/inputReady.c +++ b/libraries/base/cbits/inputReady.c @@ -25,7 +25,11 @@ fdReady(int fd, int write, int msecs, int isSock) int maxfd, ready; fd_set rfd, wfd; struct timeval tv; - + if ((fd >= (int)FD_SETSIZE) || (fd < 0)) { + /* avoid memory corruption on too large FDs */ + errno = EINVAL; + return -1; + } FD_ZERO(&rfd); FD_ZERO(&wfd); if (write) { |