This is a note to let you know that I've just added the patch titled fbdev: controlfb: Add missing modes to fix out of bounds access to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: fbdev-controlfb-add-missing-modes-to-fix-out-of-bounds-access.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Mon Dec 18 13:28:59 CET 2017 From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Date: Thu, 9 Nov 2017 18:09:33 +0100 Subject: fbdev: controlfb: Add missing modes to fix out of bounds access From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> [ Upstream commit ac831a379d34109451b3c41a44a20ee10ecb615f ] Dan's static analysis says: drivers/video/fbdev/controlfb.c:560 control_setup() error: buffer overflow 'control_mac_modes' 20 <= 21 Indeed, control_mac_modes[] has only 20 elements, while VMODE_MAX is 22, which may lead to an out of bounds read when parsing vmode commandline options. The bug was introduced in v2.4.5.6, when 2 new modes were added to macmodes.h, but control_mac_modes[] wasn't updated: https://kernel.opensuse.org/cgit/kernel/diff/include/video/macmodes.h?h=v2.5.2&id=29f279c764808560eaceb88fef36cbc35c529aad Augment control_mac_modes[] with the two new video modes to fix this. Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/video/fbdev/controlfb.h | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/video/fbdev/controlfb.h +++ b/drivers/video/fbdev/controlfb.h @@ -141,5 +141,7 @@ static struct max_cmodes control_mac_mod {{ 1, 2}}, /* 1152x870, 75Hz */ {{ 0, 1}}, /* 1280x960, 75Hz */ {{ 0, 1}}, /* 1280x1024, 75Hz */ + {{ 1, 2}}, /* 1152x768, 60Hz */ + {{ 0, 1}}, /* 1600x1024, 60Hz */ }; Patches currently in stable-queue which might be from geert@xxxxxxxxxxxxxx are queue-4.14/fbdev-controlfb-add-missing-modes-to-fix-out-of-bounds-access.patch queue-4.14/mtd-spi-nor-stm32-quadspi-fix-uninitialized-error-return-code.patch