[PATCH v1 0/2] MPAM Fixes for UAF and NPE on unbind

From: Ben Horgan

Date: Thu Aug 06 2026 - 10:53:09 EST


The MPAM driver expects to manage all the MSC in a system. At boot it
delays its initialization until it has probed all of them but once
running it is unprepared to have the MSC taken away and that can trigger
UAF and NPE. Workaround this by ensuring it never relinquishes the MSC.

Ben Horgan (2):
arm_mpam: Fix a NULL pointer dereference on unbinding after an error
interrupt
arm_mpam: Disable driver unbind to avoid UAF

drivers/resctrl/mpam_devices.c | 4 ++++
1 file changed, 4 insertions(+)

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2.43.0