CVE-2025-71121: parisc: Do not reprogram affinitiy on ASP chip
In the Linux kernel, the following vulnerability has been resolved:
parisc: Do not reprogram affinitiy on ASP chip
The ASP chip is a very old variant of the GSP chip and is used e.g. in HP 730 workstations. When trying to reprogram the affinity it will crash with a HPMC as the relevant registers don't seem to be at the usual location. Let's avoid the crash by checking the sversion. Also note, that reprogramming isn't necessary either, as the HP730 is a just a single-CPU machine.
Affected Software
Remediation
Event History
Frequently Asked Questions
Which systems are realistically affected by this issue?
The issue affects PA-RISC systems using the old ASP chip, such as HP 730 workstations. The described HP 730 hardware is single-CPU.
What action triggers the crash?
Attempting to reprogram CPU affinity on an ASP-chip system can trigger an HPMC crash because the relevant registers are not located where the kernel expects them.
Is a configuration workaround available if the patch cannot be applied immediately?
Avoid reprogramming affinity on affected ASP-chip hardware. Affinity reprogramming is not necessary for the HP 730 because it is a single-CPU machine.