diff options
Diffstat (limited to 'sys/dev/vt/vt_core.c')
| -rw-r--r-- | sys/dev/vt/vt_core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c index 50f12512a81c..547bee8be86a 100644 --- a/sys/dev/vt/vt_core.c +++ b/sys/dev/vt/vt_core.c @@ -41,6 +41,7 @@ #include <sys/kbio.h> #include <sys/kdb.h> #include <sys/kernel.h> +#include <sys/limits.h> #include <sys/linker.h> #include <sys/lock.h> #include <sys/malloc.h> @@ -2771,8 +2772,9 @@ skip_thunk: /* XXX */ return (0); case CONS_HISTORY: - if (*(int *)data < 0) - return EINVAL; + if (*(int *)data < 0 || + *(int *)data > UINT_MAX / USHRT_MAX / sizeof(term_char_t)) + return (EINVAL); if (*(int *)data != vw->vw_buf.vb_history_size) vtbuf_sethistory_size(&vw->vw_buf, *(int *)data); return (0); |