GPU DDK - Write UAF of sync checkpoint in GPU kick function after export fence file descriptor is prematurely closed
At a glance
Severity
HIGH 7.8
EPSS
EPSS 0.16 % · percentile 5 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
imaginationtech
NVD status
Analyzed
Description
Software installed and run as a non-privileged user may conduct improper GPU system calls to manipulate the lifetimes of synchronisation objects in the kernel, leading to read/write UAFs.
During workload submission involving a fence exported by the GPU driver, the reference count of the underlying synchronisation primitive is not properly incremented. This can be exploited, by destroying the exported fence and prematurely release the underlying primitive, resulting in a potential use-after-free condition.
