linux-cve-announce - CVE-2023-52585: drm/amdgpu: Fix possible NULL dereference in amdgpu_ras_query_error_status

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Message-ID: <2024030643-CVE-2023-52585-7dbc@gregkh>
Date: Wed,  6 Mar 2024 06:45:43 +0000
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-52585: drm/amdgpu: Fix possible NULL dereference in amdgpu_ras_query_error_status_helper()

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

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

drm/amdgpu: Fix possible NULL dereference in amdgpu_ras_query_error_status_helper()

Return invalid error code -EINVAL for invalid block id.

Fixes the below:

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1183 amdgpu_ras_query_error_status_helper() error: we previously assumed 'info' could be null (see line 1176)

The Linux kernel CVE team has assigned CVE-2023-52585 to this issue.


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

	Fixed in 6.7.4 with commit 195a6289282e
	Fixed in 6.8-rc1 with commit b8d55a90fd55

Please see https://www.kernel.org or 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-2023-52585
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/amd/amdgpu/amdgpu_ras.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/195a6289282e039024ad30ba66e6f94a4d0fbe49
	https://git.kernel.org/stable/c/b8d55a90fd55b767c25687747e2b24abd1ef8680