linux-cve-announce - CVE-2024-53050: drm/i915/hdcp: Add encoder check in hdcp2_get

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Message-ID: <2024111927-CVE-2024-53050-b59c@gregkh>
Date: Tue, 19 Nov 2024 18:19:32 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53050: drm/i915/hdcp: Add encoder check in hdcp2_get_capability

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

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

drm/i915/hdcp: Add encoder check in hdcp2_get_capability

Add encoder check in intel_hdcp2_get_capability to avoid
null pointer error.

The Linux kernel CVE team has assigned CVE-2024-53050 to this issue.


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

	Fixed in 6.11.7 with commit 5b89dcf23575
	Fixed in 6.12 with commit d34f4f058edf

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-2024-53050
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/display/intel_dp_hdcp.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/5b89dcf23575eb5bb95ce8d672cbc2232c2eb096
	https://git.kernel.org/stable/c/d34f4f058edf1235c103ca9c921dc54820d14d40