CVE-2026-68251: drm/amdgpu/sdma6.0: replace BUG_ON() with WARN_ON()

CVE-2026-68251: drm/amdgpu/sdma6.0: 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/sdma6.0: replace BUG_ON() with WARN_ON()

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

(cherry picked from commit c17a508a7d652da3728f8bbc481bfffe96d65a87)

The Linux kernel CVE team has assigned CVE-2026-68251 to this issue.


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

	Fixed in 6.6.148 with commit 2eb06c88426b6c8de602c608959f3a56ac51861e
	Fixed in 6.12.101 with commit e7f31c9a61533062a704f90b9f63064045249693
	Fixed in 6.18.42 with commit 51fd52087165180967cf7d5ee99badee7e172ea0
	Fixed in 7.1.6 with commit 9df8a7f09e305249872b536555793b28e77b7de9
	Fixed in 7.2-rc2 with commit ec42c96c322e5cc48099ab5e67b5cbe236cb1949

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-2026-68251
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_v6_0.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/2eb06c88426b6c8de602c608959f3a56ac51861e
	https://git.kernel.org/stable/c/e7f31c9a61533062a704f90b9f63064045249693
	https://git.kernel.org/stable/c/51fd52087165180967cf7d5ee99badee7e172ea0
	https://git.kernel.org/stable/c/9df8a7f09e305249872b536555793b28e77b7de9
	https://git.kernel.org/stable/c/ec42c96c322e5cc48099ab5e67b5cbe236cb1949