diff options
Diffstat (limited to 'sys/dev/vt/vt_font.c')
| -rw-r--r-- | sys/dev/vt/vt_font.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/vt/vt_font.c b/sys/dev/vt/vt_font.c index 4c369c6..1e65e70 100644 --- a/sys/dev/vt/vt_font.c +++ b/sys/dev/vt/vt_font.c @@ -42,6 +42,7 @@ static MALLOC_DEFINE(M_VTFONT, "vtfont", "vt font"); /* Some limits to prevent abnormal fonts from being loaded. */ #define VTFONT_MAXMAPPINGS 65536 +#define VTFONT_MAXGLYPHS 131072 #define VTFONT_MAXGLYPHSIZE 2097152 #define VTFONT_MAXDIMENSION 128 @@ -171,7 +172,8 @@ vtfont_load(vfnt_t *f, struct vt_font **ret) /* Make sure the dimensions are valid. */ if (f->width < 1 || f->height < 1) return (EINVAL); - if (f->width > VTFONT_MAXDIMENSION || f->height > VTFONT_MAXDIMENSION) + if (f->width > VTFONT_MAXDIMENSION || f->height > VTFONT_MAXDIMENSION || + f->glyph_count > VTFONT_MAXGLYPHS) return (E2BIG); /* Not too many mappings. */ |
