CVE-2026-68249: drm/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON()

CVE-2026-68249: drm/amdgpu/sdma5.0: 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/sdma5.0: replace BUG_ON() with WARN_ON()

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

(cherry picked from commit 8d144a0eb09537055841af48c9e7c2d4cd48e84d)

The Linux kernel CVE team has assigned CVE-2026-68249 to this issue.


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

	Fixed in 6.6.148 with commit f6212bc1bbd936fd9f7d77168b0c8b0019477b64
	Fixed in 6.12.101 with commit 28337e5d7df429bac7de64b17f1a595147778caa
	Fixed in 6.18.42 with commit d20b5c139b2906bcd8ab4bfe5b8be500318161d1
	Fixed in 7.1.6 with commit 0027cb19b0449ad6babedb1af285a713ab05c97f
	Fixed in 7.2-rc2 with commit 9e98ed3113943257ad6e5c1e6beddbdb482a70ad

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-2026-68249
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_v5_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/f6212bc1bbd936fd9f7d77168b0c8b0019477b64
	https://git.kernel.org/stable/c/28337e5d7df429bac7de64b17f1a595147778caa
	https://git.kernel.org/stable/c/d20b5c139b2906bcd8ab4bfe5b8be500318161d1
	https://git.kernel.org/stable/c/0027cb19b0449ad6babedb1af285a713ab05c97f
	https://git.kernel.org/stable/c/9e98ed3113943257ad6e5c1e6beddbdb482a70ad