APPLIED [OEM-5.17] Re: [SRU F/OEM-5.14/J/OEM-5.17 PATCH 0/3] CVE-2021-33655
tjaalton at ubuntu.com
Mon Aug 22 08:55:43 UTC 2022
Cengiz Can kirjoitti 5.8.2022 klo 13.09:
> When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,
> kernel will write memory out of bounds.
> Fixes were cherry-picked from closest stable trees and upstream.
> MITRE entry points to a merge commit that contain six patches. Three of
> those were considered relevant.
> [Test case]
> Compile and boot tested on KVM only.
> [Potential regression]
> Due to self contained changes on >5.4, seems minimal.
> Helge Deller (3):
> fbcon: Disallow setting font bigger than screen size
> fbcon: Prevent that screen size is smaller than font size
> fbmem: Check virtual screen sizes in fb_set_var()
> drivers/video/fbdev/core/fbcon.c | 33 ++++++++++++++++++++++++++++++++
> drivers/video/fbdev/core/fbmem.c | 14 +++++++++++++-
> include/linux/fbcon.h | 4 ++++
> 3 files changed, 50 insertions(+), 1 deletion(-)
applied to oem-5.17, thanks
More information about the kernel-team