CVE-2023-54217

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Revert "drm/msm: Add missing check and destroy for alloc_ordered_workqueue"<br /> <br /> This reverts commit 643b7d0869cc7f1f7a5ac7ca6bd25d88f54e31d0.<br /> <br /> A recent patch that tried to fix up the msm_drm_init() paths with<br /> respect to the workqueue but only ended up making things worse:<br /> <br /> First, the newly added calls to msm_drm_uninit() on early errors would<br /> trigger NULL-pointer dereferences, for example, as the kms pointer would<br /> not have been initialised. (Note that these paths were also modified by<br /> a second broken error handling patch which in effect cancelled out this<br /> part when merged.)<br /> <br /> Second, the newly added allocation sanity check would still leak the<br /> previously allocated drm device.<br /> <br /> Instead of trying to salvage what was badly broken (and clearly not<br /> tested), let&amp;#39;s revert the bad commit so that clean and backportable<br /> fixes can be added in its place.<br /> <br /> Patchwork: https://patchwork.freedesktop.org/patch/525107/