CVE-2026-68109: drm/amdgpu/sdma7.1: replace BUG_ON() with WARN_ON()

CVE-2026-68109: drm/amdgpu/sdma7.1: replace BUG_ON() with WARN_ON()

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

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

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

drm/amdgpu/sdma7.1: replace BUG_ON() with WARN_ON()

There's no need to crash the kernel for these cases.

(cherry picked from commit c4f230b51cf2d3e7e8b1c800331f3dbed2a9e3f5)

The Linux kernel CVE team has assigned CVE-2026-68109 to this issue.


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

	Fixed in 7.1.6 with commit 253b1401862b9eb2be54f63546505a40a14672dd
	Fixed in 7.2-rc2 with commit 767648c18d7872bbf54481ba846e055f7e1c0213

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-2026-68109
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/sdma_v7_1.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/253b1401862b9eb2be54f63546505a40a14672dd
	https://git.kernel.org/stable/c/767648c18d7872bbf54481ba846e055f7e1c0213