CVE-2026-64526: ethtool: tsconfig: fix missing ethnl_ops_complete()

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

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

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

ethtool: tsconfig: fix missing ethnl_ops_complete()

tsconfig_prepare_data() calls ethnl_ops_begin(), we need to call
ethnl_ops_complete() before returning the error.

The Linux kernel CVE team has assigned CVE-2026-64526 to this issue.


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

	Issue introduced in 6.14 with commit 6e9e2eed4f39d52edf5fd006409d211facf49f6b and fixed in 6.18.35 with commit d02342d9bb4f0ab682f1846a4fbc15dd2955f7e6
	Issue introduced in 6.14 with commit 6e9e2eed4f39d52edf5fd006409d211facf49f6b and fixed in 7.0.12 with commit d53fe379d1f9a92e8a1bb2556084c8c177ebf8fd
	Issue introduced in 6.14 with commit 6e9e2eed4f39d52edf5fd006409d211facf49f6b and fixed in 7.1 with commit 6386bd772de64e6760306eb91c7e86163af6c22f

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-2026-64526
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:
	net/ethtool/tsconfig.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/d02342d9bb4f0ab682f1846a4fbc15dd2955f7e6
	https://git.kernel.org/stable/c/d53fe379d1f9a92e8a1bb2556084c8c177ebf8fd
	https://git.kernel.org/stable/c/6386bd772de64e6760306eb91c7e86163af6c22f