CVE-2026-53375: drm/amdgpu/vce: Prevent partial address patches

CVE-2026-53375: drm/amdgpu/vce: Prevent partial address patches

[Greg Kroah-Hartman]

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

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

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

drm/amdgpu/vce: Prevent partial address patches

In the case that only one of lo/hi is valid, the patching could result
in a bad address written to in FW.

The Linux kernel CVE team has assigned CVE-2026-53375 to this issue.


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

	Fixed in 6.1.175 with commit 2d66d1f5d8c0434e9a5ad21cc6eaf3a5e32141d5
	Fixed in 6.6.140 with commit 944db9cfa5373f67eb94621d4c2eee572c05fa3f
	Fixed in 6.12.90 with commit 0ee17150763962671f43a62ddf8f6ea1feaff438
	Fixed in 6.18.32 with commit b3d1a0a45c4aec484fa2a5b060b611e3d3064470
	Fixed in 7.0.9 with commit ea2c554e700b86a04534b4c24ece5844e8c5f07e
	Fixed in 7.1 with commit de2a02cc28d6d5d37db07d00a9a684c754a5fd74

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-2026-53375
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/amdgpu_vce.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/2d66d1f5d8c0434e9a5ad21cc6eaf3a5e32141d5
	https://git.kernel.org/stable/c/944db9cfa5373f67eb94621d4c2eee572c05fa3f
	https://git.kernel.org/stable/c/0ee17150763962671f43a62ddf8f6ea1feaff438
	https://git.kernel.org/stable/c/b3d1a0a45c4aec484fa2a5b060b611e3d3064470
	https://git.kernel.org/stable/c/ea2c554e700b86a04534b4c24ece5844e8c5f07e
	https://git.kernel.org/stable/c/de2a02cc28d6d5d37db07d00a9a684c754a5fd74