ACK: [SRU Bionic, Focal, OEM-5.10, HWE-5.11, Impish, OEM-5.14, Jammy 0/1] CVE-2022-22942

[Luke Nowakowski-Krijger]

On Thu, Jan 27, 2022 at 12:59 PM Thadeu Lima de Souza Cascardo <
cascardo at canonical.com> wrote:

> [Impact]
> Unprivileged users with DRM access on a system using vmwgfx could gain
> access to files opened by other processes.
>
> [Fix]
> Backports were provided by author and tested on kernels 4.15, 5.4, 5.10,
> 5.11, 5.13, 5.14 and 5.15.
>
> [Test case]
> A program that exercises the changed path gets EFAULT as expected.
>
> [Potential regression]
> Only vmwgfx users should be affected.
>
> Mathias Krause (1):
>   UBUNTU: SAUCE: drm/vmwgfx: Fix stale file descriptors on failed
>     usercopy
>
>  drivers/gpu/drm/vmwgfx/vmwgfx_drv.h     |  5 ++--
>  drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 34 ++++++++++++-------------
>  drivers/gpu/drm/vmwgfx/vmwgfx_fence.c   |  2 +-
>  drivers/gpu/drm/vmwgfx/vmwgfx_kms.c     |  2 +-
>  4 files changed, 21 insertions(+), 22 deletions(-)
>
> --
> 2.32.0
>
>
Acked-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger at canonical.com>

- Luke

>
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