linux-cve-announce - CVE-2025-71121: parisc: Do not reprogram affinitiy on ASP chip

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Message-ID: <2026011416-CVE-2025-71121-bf23@gregkh>
Date: Wed, 14 Jan 2026 16:06:26 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-71121: parisc: Do not reprogram affinitiy on ASP chip

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

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.

The Linux kernel CVE team has assigned CVE-2025-71121 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.1.160 with commit 4d0858bbeea12a50bfb32137f74d4b74917ebadd
	Fixed in 6.6.120 with commit e09fd2eb6d4c993ee9eaae556cb51e30ec1042df
	Fixed in 6.12.64 with commit 60560d13ff368415c96a0c1247bea16d427c0641
	Fixed in 6.18.3 with commit c8f810e20f4bbe50b49f73429d9fa6efad00623e
	Fixed in 6.19-rc1 with commit dca7da244349eef4d78527cafc0bf80816b261f5

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2025-71121
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/parisc/gsc.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/4d0858bbeea12a50bfb32137f74d4b74917ebadd
	https://git.kernel.org/stable/c/e09fd2eb6d4c993ee9eaae556cb51e30ec1042df
	https://git.kernel.org/stable/c/60560d13ff368415c96a0c1247bea16d427c0641
	https://git.kernel.org/stable/c/c8f810e20f4bbe50b49f73429d9fa6efad00623e
	https://git.kernel.org/stable/c/dca7da244349eef4d78527cafc0bf80816b261f5