1 Apr
2021
1 Apr
'21
9:55 a.m.
On Thu, Apr 1, 2021 at 12:09 AM Phillip Potter phil@philpotter.co.uk wrote:
Use kzalloc() rather than kmalloc() for the dynamically allocated parts of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel data to userspace under certain circumstances.
Fixes a KMSAN-found infoleak bug reported by syzbot at: https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6...
Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com Signed-off-by: Phillip Potter phil@philpotter.co.uk
Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds