CVE-2023-52930 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/i915: Fix potential bit_17 double-free

A userspace with multiple threads racing I915_GEM_SET_TILING to set the tiling to I915_TILING_NONE could trigger a double free of the bit_17 bitmask. (Or conversely leak memory on the transition to tiled.) Move allocation/free’ing of the bitmask within the section protected by the obj lock.

[tursulin: Correct fixes tag and added cc stable.] (cherry picked from commit 10e0cbaaf1104f449d695c80bcacf930dcd3c42e)

Reference

https://git.kernel.org/stable/c/0769f997a7b6d5cb8336db0b4ec3d2d311b8097c https://git.kernel.org/stable/c/7057a8f126f14f14b040faecfa220fd27c6c2f85 https://git.kernel.org/stable/c/b591abac78e25269b12e3d7170c99463f8c5cb02 https://git.kernel.org/stable/c/e3ebc3e23bd9028a8a9a26cbc5985f99be445f65