[SRU F/OEM-5.14/J/OEM-5.17 PATCH 0/3] CVE-2021-33655

[Cengiz Can]

On Fri, 2022-08-05 at 14:15 +0200, Stefan Bader wrote:
> On 05.08.22 12:09, Cengiz Can wrote:
> > [Impact]
> > When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,
> > kernel will write memory out of bounds.
> > 
> > [Fix]
> > 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(-)
> > 
> 
> I wonder whether you should, instead of submitting for jammy:linux-oem-5.17 do 
> submissions for jammy:linux-hwe-5.17 instead...

Thanks for the heads up! 

Next time, I'll target linux-hwe-5.17 for 5.17.

> 
> -Stefan

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