linux-cve-announce - CVE-2024-56667: drm/i915: Fix NULL pointer dereference in capture

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Message-ID: <2024122753-CVE-2024-56667-3c3f@gregkh>
Date: Fri, 27 Dec 2024 16:07:04 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56667: drm/i915: Fix NULL pointer dereference in capture_engine

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

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

drm/i915: Fix NULL pointer dereference in capture_engine

When the intel_context structure contains NULL,
it raises a NULL pointer dereference error in drm_info().

(cherry picked from commit 754302a5bc1bd8fd3b7d85c168b0a1af6d4bba4d)

The Linux kernel CVE team has assigned CVE-2024-56667 to this issue.


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

	Issue introduced in 6.3 with commit e8a3319c31a14aa9925418bc7813c2866903b2c6 and fixed in 6.6.67 with commit e07f9c92bd127f8835ac669d83b5e7ff59bbb40f
	Issue introduced in 6.3 with commit e8a3319c31a14aa9925418bc7813c2866903b2c6 and fixed in 6.12.6 with commit e6ebe4f14a267bc431d0eebab4f335c0ebd45977
	Issue introduced in 6.3 with commit e8a3319c31a14aa9925418bc7813c2866903b2c6 and fixed in 6.13-rc3 with commit da0b986256ae9a78b0215214ff44f271bfe237c1

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-2024-56667
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/i915/i915_gpu_error.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/e07f9c92bd127f8835ac669d83b5e7ff59bbb40f
	https://git.kernel.org/stable/c/e6ebe4f14a267bc431d0eebab4f335c0ebd45977
	https://git.kernel.org/stable/c/da0b986256ae9a78b0215214ff44f271bfe237c1