ACK: [PATCH 0/1] [SRU] [focal/linux-oem-5.6] CVE-2020-14390

[Stefan Bader]

On 11.03.21 20:19, Tim Gardner wrote:
> [Impact]
> A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing
> screen size, an out-of-bounds memory write can occur leading to memory
> corruption or a denial of service. Due to the nature of the flaw, privilege
> escalation cannot be fully ruled out.
> 
>  From the Ubuntu security team:
> It was discovered that the frame buffer implementation in the Linux kernel
> did not properly handle some edge cases in software scrollback. A local
> attacker could use this to cause a denial of service (system crash) or
> possibly execute arbitrary code.
> 
> [Test Case]
> none
> 
> [Potential regression]
> Patch released in
> linux-4.14.y
> linux-4.19.y
> linux-4.4.y
> linux-4.9.y
> linux-5.4.y
> linux-5.8.y
> 
> 
Acked-by: Stefan Bader <stefan.bader at canonical.com>

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