| commit | 19ab233989d0f7ab1de19a036e247afa4a0a1e9c | [log] [tgz] |
|---|---|---|
| author | Phillip Potter <phil@philpotter.co.uk> | Wed Mar 31 23:07:19 2021 +0100 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Sat Apr 10 11:12:08 2021 +0200 |
| tree | 2513acdfba7cf259f039e18c7d8e173a80b2eee8 | |
| parent | 2954a6f12f250890ec2433cec03ba92784d613e8 [diff] |
fbdev: zero-fill colormap in fbcmap.c 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 Cc: stable <stable@vger.kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Phillip Potter <phil@philpotter.co.uk> Link: https://lore.kernel.org/r/20210331220719.1499743-1-phil@philpotter.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>