linux-cve-announce - CVE-2025-22101: net: libwx: fix Tx L4 checksum

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Message-ID: <2025041621-CVE-2025-22101-872e@gregkh>
Date: Wed, 16 Apr 2025 16:13:12 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-22101: net: libwx: fix Tx L4 checksum

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

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

net: libwx: fix Tx L4 checksum

The hardware only supports L4 checksum offload for TCP/UDP/SCTP protocol.
There was a bug to set Tx checksum flag for the other protocol that results
in Tx ring hang. Fix to compute software checksum for these packets.

The Linux kernel CVE team has assigned CVE-2025-22101 to this issue.


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

	Issue introduced in 6.5 with commit 3403960cdf86c967442dccc2bec981e0093f716e and fixed in 6.14.2 with commit 5f583e059eced1857f41e221ef5951e029e632bd
	Issue introduced in 6.5 with commit 3403960cdf86c967442dccc2bec981e0093f716e and fixed in 6.15-rc1 with commit c7d82913d5f9e97860772ee4051eaa66b56a6273

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-2025-22101
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/net/ethernet/wangxun/libwx/wx_lib.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/5f583e059eced1857f41e221ef5951e029e632bd
	https://git.kernel.org/stable/c/c7d82913d5f9e97860772ee4051eaa66b56a6273