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one vgacon input check for stable

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Merge tag 'drm-fixes-2020-03-06-1' of git://anongit.freedesktop.org/drm/drm

Pull vgacon fix from Daniel Vetter:
 "One vgacon input check for stable"

* tag 'drm-fixes-2020-03-06-1' of git://anongit.freedesktop.org/drm/drm:
  vgacon: Fix a UAF in vgacon_invert_region
This commit is contained in:
Linus Torvalds 2020-03-06 16:08:48 -06:00
commit 2f501bb180
1 changed files with 3 additions and 0 deletions
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3
drivers/video/console/vgacon.c
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@ -1316,6 +1316,9 @@ static int vgacon_font_get(struct vc_data *c, struct console_font *font)
static int vgacon_resize(struct vc_data *c, unsigned int width,
unsigned int height, unsigned int user)
{
if ((width << 1) * height > vga_vram_size)
return -EINVAL;
if (width % 2 || width > screen_info.orig_video_cols ||
height > (screen_info.orig_video_lines * vga_default_font_height)/
c->vc_font.height)