linux-cve-announce - CVE-2024-53078: drm/tegra: Fix NULL vs IS

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Message-ID: <2024111925-CVE-2024-53078-f504@gregkh>
Date: Tue, 19 Nov 2024 18:31:29 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53078: drm/tegra: Fix NULL vs IS_ERR() check in probe()

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

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

drm/tegra: Fix NULL vs IS_ERR() check in probe()

The iommu_paging_domain_alloc() function doesn't  return NULL pointers,
it returns error pointers.  Update the check to match.

The Linux kernel CVE team has assigned CVE-2024-53078 to this issue.


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

	Issue introduced in 6.11 with commit 45c690aea8ee and fixed in 6.11.7 with commit 6d6c005855b9
	Issue introduced in 6.11 with commit 45c690aea8ee and fixed in 6.12 with commit a85df8c7b5ee

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-2024-53078
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/tegra/drm.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/6d6c005855b97b8caf6039c1774745ee74c91fa6
	https://git.kernel.org/stable/c/a85df8c7b5ee2d3d4823befada42c5c41aff4cb0