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

[Alice C. Munduruca]

[ 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.
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(-)

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2.51.0