CVE-2026-68112: drm/amdgpu/gfx9.4.3: replace BUG_ON() with WARN_ON()

CVE-2026-68112: drm/amdgpu/gfx9.4.3: 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/gfx9.4.3: replace BUG_ON() with WARN_ON()

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

(cherry picked from commit 5676593d08998d7a6d9e2d51d6b54b3820e3755c)

The Linux kernel CVE team has assigned CVE-2026-68112 to this issue.


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

	Fixed in 6.6.148 with commit c59b57c2e0c8cced4350ff7792361ba2a79ee85c
	Fixed in 6.12.101 with commit cfb02825277526bd216b56be555a97a9e8612682
	Fixed in 6.18.42 with commit 05aea3344c422fe95299bb1b21a04de30c7ea198
	Fixed in 7.1.6 with commit ac89ea915e8b848c7cbe97b1aad2dc4f5770c6d7
	Fixed in 7.2-rc2 with commit 00f4050f7c367d7bdce347ca279ce467c434cf15

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-2026-68112
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/gfx_v9_4_3.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/c59b57c2e0c8cced4350ff7792361ba2a79ee85c
	https://git.kernel.org/stable/c/cfb02825277526bd216b56be555a97a9e8612682
	https://git.kernel.org/stable/c/05aea3344c422fe95299bb1b21a04de30c7ea198
	https://git.kernel.org/stable/c/ac89ea915e8b848c7cbe97b1aad2dc4f5770c6d7
	https://git.kernel.org/stable/c/00f4050f7c367d7bdce347ca279ce467c434cf15