linux-cve-announce - CVE-2024-53098: drm/xe/ufence: Prefetch ufence addr to catch bogus address

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Message-ID: <2024112506-CVE-2024-53098-2135@gregkh>
Date: Mon, 25 Nov 2024 22:21:07 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53098: drm/xe/ufence: Prefetch ufence addr to catch bogus address

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

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

drm/xe/ufence: Prefetch ufence addr to catch bogus address

access_ok() only checks for addr overflow so also try to read the addr
to catch invalid addr sent from userspace.

(cherry picked from commit 9408c4508483ffc60811e910a93d6425b8e63928)

The Linux kernel CVE team has assigned CVE-2024-53098 to this issue.


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

	Fixed in 6.11.9 with commit 5d623ffbae96
	Fixed in 6.12 with commit 9c1813b32534

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-2024-53098
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/xe/xe_sync.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/5d623ffbae96b23f1fc43a3d5a267aabdb07583d
	https://git.kernel.org/stable/c/9c1813b3253480b30604c680026c7dc721ce86d1