linux-cve-announce - CVE-2022-49499: drm/msm: Fix null pointer dereferences without iommu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025022607-CVE-2022-49499-8617@gregkh>
Date: Wed, 26 Feb 2025 03:12:53 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49499: drm/msm: Fix null pointer dereferences without iommu

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

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

drm/msm: Fix null pointer dereferences without iommu

Check if 'aspace' is set before using it as it will stay null without
IOMMU, such as on msm8974.

The Linux kernel CVE team has assigned CVE-2022-49499 to this issue.


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

	Issue introduced in 5.18 with commit bc2112583a0b473f5c4ba87c00da84abd5d0b3fd and fixed in 5.18.3 with commit f09937e80f9bc792965476c9a528f26c8fdc9179
	Issue introduced in 5.18 with commit bc2112583a0b473f5c4ba87c00da84abd5d0b3fd and fixed in 5.19 with commit 36a1d1bda77e1851bddfa9cf4e8ada94476dbaff

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-2022-49499
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/msm/adreno/adreno_gpu.c
	drivers/gpu/drm/msm/msm_gpu.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/f09937e80f9bc792965476c9a528f26c8fdc9179
	https://git.kernel.org/stable/c/36a1d1bda77e1851bddfa9cf4e8ada94476dbaff