NACK: [SRU][J/F/B][PATCH 0/1](upstream) video: fbdev: i740fb: Error out if 'pixclock' equals zero

[Stefan Bader]

On 14.10.22 02:00, John Cabaj wrote:
> CVE-2022-3061
> 
> [Impact]
> 
> * Intel 740fb graphics card driver could encounter a divide-by-zero error if the value of pixclock is zero. The ability of a userspace program to pass any values to ioctl() further exposes this issue.
> 
> [Fix]
> 
> * A simple check to ensure pixclock is non-zero was added to i740fb_check_var.
> 
> [Test Plan]
> 
> * Install linux-5.15 on jammy system and boot test
> 
> [Where problems could occur]
> 
> * If there is some other downstream reliance on a pixclock value of zero serving as a flag
> 
> ZheyuMa (1):
>    video: fbdev: i740fb: Error out if 'pixclock' equals zero
> 
>   drivers/video/fbdev/i740fb.c | 3 +++
>   1 file changed, 3 insertions(+)
> 

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