Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Thu, 1 Apr 2021 11:55:50 +0200 | Subject | Re: [PATCH] zero-fill colormap in drivers/video/fbdev/core/fbcmap.c |
| |
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=741578659feabd108ad9e06696f0c1f2e69c4b6e > > 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
| |