linux-cve-announce - CVE-2023-53104: net: usb: smsc75xx: Move packet length check to prevent kernel panic in skb

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Message-ID: <2025050225-CVE-2023-53104-d632@gregkh>
Date: Fri,  2 May 2025 17:56:09 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53104: net: usb: smsc75xx: Move packet length check to prevent kernel panic in skb_pull

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

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

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

net: usb: smsc75xx: Move packet length check to prevent kernel panic in skb_pull

Packet length check needs to be located after size and align_count
calculation to prevent kernel panic in skb_pull() in case
rx_cmd_a & RX_CMD_A_RED evaluates to true.

The Linux kernel CVE team has assigned CVE-2023-53104 to this issue.


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

	Issue fixed in mainline with commit 43ffe6c

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-2023-53104
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/usb/smsc75xx.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/5c96eeba93980c5cef5176a4bac0ddb722fd57dc
	https://git.kernel.org/stable/c/89441504d66d116eb5ce58c132f58cdcca5b498a
	https://git.kernel.org/stable/c/e0d07a3203c36d073af2177edfc6b070220a60cb
	https://git.kernel.org/stable/c/2cc46ed406bb325f10a251b03d9a83ae67b3d3d8
	https://git.kernel.org/stable/c/7bf0eac3fdd2d25f5c6ceab63e3e4902e274f7ee
	https://git.kernel.org/stable/c/4caee8e7d91e4f06f21881726da9c1bb2cd6e4fa
	https://git.kernel.org/stable/c/181e9db5caec4daae57a58675a1ceaa47348958f
	https://git.kernel.org/stable/c/43ffe6caccc7a1bb9d7442fbab521efbf6c1378c