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CVE-2025-40191

drm/amdkfd: Fix kfd process ref leaking when userptr unmapping PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix kfd process ref leaking when userptr unmapping kfd_lookup_process_by_pid hold the kfd process reference to ensure it doesn't get destroyed while sending the segfault event to user space. Calling kfd_lookup_process_by_pid as function parameter leaks the kfd process refcount and miss the NULL pointer check if app process is already destroyed.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 2d274bf7099bc5e95fabaa93f23d0eb2977187ad before 60f6112fc9b3ba0eae519f10702c0c13bab45742; affected 2d274bf7099bc5e95fabaa93f23d0eb2977187ad before 58e6fc2fb94f0f409447e5d46cf6a417b6397fbc
Linux / Linuxaffected 6.16; unaffected 0 before 6.16; unaffected 6.17.4 through 6.17.*; unaffected 6.18 through *

CWE

No CWE identifiers supplied.

References