In the Linux kernel, the following vulnerability has been resolved:

drm/hyperv: validate resolution_count and fix WIN8 fallback

A SYNTHVID_RESOLUTION_RESPONSE with resolution_count > 64 walks past
the supported_resolution[SYNTHVID_MAX_RESOLUTION_COUNT] array in the
parse loop. Bound resolution_count against the array size, folded
into the existing zero-check.

When the WIN10 resolution probe fails, the caller in
hyperv_connect_vsp() left hv->screen_*_max / preferred_* unpopulated,
which sets mode_config.max_width / max_height to 0 and makes
drm_internal_framebuffer_create() reject every userspace framebuffer
with -EINVAL. The pre-WIN10 branch had the same gap for
preferred_width / preferred_height. Use a single post-probe fallback
guarded by screen_width_max == 0 so both paths converge on the WIN8
defaults.

https://git.kernel.org/stable/c/13d33b9ef67066c77c84273fac5a1d3fde3533d1

https://git.kernel.org/stable/c/1fb565b77b8f44afabb02de6310065f109d89e94

https://git.kernel.org/stable/c/8a114b25b5521eae451b13bce98ae978624962e5

https://git.kernel.org/stable/c/96f7de3172d4aa878b7f87173b2b3507c350fcd6

https://git.kernel.org/stable/c/9c698b2c43c2667c34f5336bf46ad5786216ac2a

https://git.kernel.org/stable/c/a321c908f2eeea01539668eb270d074d9b88e490

https://git.kernel.org/stable/c/bc573752f3dac0d1ab8df7078c1851bc76717653

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