CVE-2026-68207: media: ti: vpe: unwind v4l2 device registration on probe error

From: Greg Kroah-Hartman <[email protected]>

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

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

media: ti: vpe: unwind v4l2 device registration on probe error

If the vpe_top resource is missing, vpe_probe() returns -ENODEV after
v4l2_device_register() has succeeded. Probe failures do not call the
driver's remove callback, so the v4l2 device remains registered on that
error path.

Route that failure through the existing v4l2_device_unregister() unwind
label, matching the other errors after v4l2_device_register().

The Linux kernel CVE team has assigned CVE-2026-68207 to this issue.


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

	Issue introduced in 5.5 with commit 4d59c7d455853edca990848b1cb7c482b4628f32 and fixed in 6.6.148 with commit 4ecf0cc0cf59032a89bcdf36fbbb03bff5455fd9
	Issue introduced in 5.5 with commit 4d59c7d455853edca990848b1cb7c482b4628f32 and fixed in 6.12.101 with commit 7d383357905de975e1dbde639e5fa7477075d104
	Issue introduced in 5.5 with commit 4d59c7d455853edca990848b1cb7c482b4628f32 and fixed in 6.18.42 with commit 7e6521dd747eca3cb3d4cd3ddcf20f266494f63d
	Issue introduced in 5.5 with commit 4d59c7d455853edca990848b1cb7c482b4628f32 and fixed in 7.1.6 with commit fcbbaf9cb9722a82f0221c56114037fc537f4ada
	Issue introduced in 5.5 with commit 4d59c7d455853edca990848b1cb7c482b4628f32 and fixed in 7.2-rc1 with commit e0f1c9a90ef665f2587c274a8fed59f2dfc575a6

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-2026-68207
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/media/platform/ti/vpe/vpe.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/4ecf0cc0cf59032a89bcdf36fbbb03bff5455fd9
	https://git.kernel.org/stable/c/7d383357905de975e1dbde639e5fa7477075d104
	https://git.kernel.org/stable/c/7e6521dd747eca3cb3d4cd3ddcf20f266494f63d
	https://git.kernel.org/stable/c/fcbbaf9cb9722a82f0221c56114037fc537f4ada
	https://git.kernel.org/stable/c/e0f1c9a90ef665f2587c274a8fed59f2dfc575a6