ACK/Cmnt: [SRU][J][PATCH 0/1] CVE-2024-56538

[Tim Whisonant]

On Mon, Nov 17, 2025 at 02:41:26PM -0500, Alice C. Munduruca wrote:
> [ Impact ]
> 
> It is possible for the zynqmp gpu drm driver to handle the
> `drm_device` in such a way where usespace accesses can lead to UAFs.
                                   ^
                    ---------------
                   |
There is one typo here in the cover letter. Otherwise, you have my

Acked-by: Tim Whisonant <tim.whisonant at canonical.com>

> To mitigate this error path, we should unplug the device alongside
> freeing it.
> 
> [ Fix ]
> 
> jammy: backported from upstream commit.
> 
> [ Tests ]
> 
> Compile and boot tested. (+stress-ng cpu,iomix)
> 
> [ Where problems could occur ]
> 
> This is essentially a one line cherry pick (simply in a different
> location than the upstream patch) and so the risk of regression
> is very low, especially given the limited scope of changes. (just
> zynqmp hardware)
> 
> 
> Sean Anderson (1):
>   drm: zynqmp_kms: Unplug DRM device before removal
> 
>  drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> -- 
> 2.51.0
> 
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team