CVE-2025-40247

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16.0-rc2-00809-g0b6974bb4134-dirty #367

Description The Linux kernel contains a flaw within the drm/msm subsystem related to the handling of pgtable preallocation. Specifically, the msm vma job free() function, directly callable from an ioctl, can lead to an error path where prealloc cleanup() is invoked without a prior successful prealloc allocate() call. This can result in a kernel NULL pointer dereference, potentially leading to a system crash. The issue was identified through a reported kernel splat involving a memory abort and a subsequent oops.

Recommendations Update to a version later than 6.16.0-rc2-00809-g0b6974bb4134-dirty #367.