diff options
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 13b339b..852cd39 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -469,10 +469,11 @@ do_dup(td, type, old, new, retval) * Verify we have a valid descriptor to dup from and possibly to * dup to. */ + if (old < 0 || new < 0 || new >= p->p_rlimit[RLIMIT_NOFILE].rlim_cur || + new >= maxfilesperproc) + return (EBADF); FILEDESC_LOCK(fdp); - if (old >= fdp->fd_nfiles || fdp->fd_ofiles[old] == NULL || - new >= p->p_rlimit[RLIMIT_NOFILE].rlim_cur || - new >= maxfilesperproc) { + if (old >= fdp->fd_nfiles || fdp->fd_ofiles[old] == NULL) { FILEDESC_UNLOCK(fdp); return (EBADF); } |
