linux-cve-announce - CVE-2024-46775: drm/amd/display: Validate function returns

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Message-ID: <2024091847-CVE-2024-46775-aecc@gregkh>
Date: Wed, 18 Sep 2024 09:17:10 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-46775: drm/amd/display: Validate function returns

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

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

drm/amd/display: Validate function returns

[WHAT & HOW]
Function return values must be checked before data can be used
in subsequent functions.

This fixes 4 CHECKED_RETURN issues reported by Coverity.

The Linux kernel CVE team has assigned CVE-2024-46775 to this issue.


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

	Fixed in 6.10.10 with commit 5639a3048c70
	Fixed in 6.11 with commit 673f816b9e1e

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-2024-46775
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/display/dc/dc_dmub_srv.c
	drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c
	drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.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/5639a3048c7079803256374204ad55ec52cd0b49
	https://git.kernel.org/stable/c/673f816b9e1e92d1f70e1bf5f21b531e0ff9ad6c