CVE-2020-36788 drm/nouveau: avoid a use-after-free when BO init fails

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: avoid a use-after-free when BO init fails nouveauboinit is backed by ttmboinit and ferries its return code back to the caller. On failures, ttmboinit invokes the provided destructor which should de-initialize and fre...

CVE-2020-36788

CVE-2020-36788 affects the Linux kernel DRM/Nouveau: when nouveau_bo_init() fails, the underlying memory may be freed twice due to a use-after-free in the BO init path. The description explains that nouveau_bo_init() delegates to ttm_bo_init(), and on failure ttm_bo_init() calls a destructor that...