CVE-2023-53002 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/i915: Fix a memory leak with reused mmap_offset

drm_vma_node_allow() and drm_vma_node_revoke() should be called in balanced pairs. We call drm_vma_node_allow() once per-file everytime a user calls mmap_offset but only call drm_vma_node_revoke once per-file on each mmap_offset. As the mmap_offset is reused by the client the per-file vm_count may remain non-zero and the rbtree leaked.

Call drm_vma_node_allow_once() instead to prevent that memory leak.

Reference

https://git.kernel.org/stable/c/0220e4fe178c3390eb0291cdb34912d66972db8a https://git.kernel.org/stable/c/0bdc4b4ba7206c452ee81c82fa66e39d0e1780fb