CVE-2025-71302: drm/panthor: fix for dma-fence safe access rules

CVE-2025-71302: drm/panthor: fix for dma-fence safe access rules

[Greg Kroah-Hartman]

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

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

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: fix for dma-fence safe access rules

Commit 506aa8b02a8d6 ("dma-fence: Add safe access helpers and document
the rules") details the dma-fence safe access rules. The most common
culprit is that drm_sched_fence_get_timeline_name may race with
group_free_queue.

The Linux kernel CVE team has assigned CVE-2025-71302 to this issue.


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

	Fixed in 6.18.16 with commit ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2
	Fixed in 6.19.6 with commit eae60933abd11df013876f647c9edbd35ce67615
	Fixed in 7.0 with commit efe24898485c5c831e629d9c6fb9350c35cb576f

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-2025-71302
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/gpu/drm/panthor/panthor_sched.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/ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2
	https://git.kernel.org/stable/c/eae60933abd11df013876f647c9edbd35ce67615
	https://git.kernel.org/stable/c/efe24898485c5c831e629d9c6fb9350c35cb576f