linux-cve-announce - CVE-2022-49817: net: mhi: Fix memory leak in mhi_net

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025050132-CVE-2022-49817-0a77@gregkh>
Date: Thu,  1 May 2025 16:10:07 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-49817: net: mhi: Fix memory leak in mhi_net_dellink()

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

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

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

net: mhi: Fix memory leak in mhi_net_dellink()

MHI driver registers network device without setting the
needs_free_netdev flag, and does NOT call free_netdev() when
unregisters network device, which causes a memory leak.

This patch calls free_netdev() to fix it since netdev_priv
is used after unregister.

The Linux kernel CVE team has assigned CVE-2022-49817 to this issue.


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

	Issue introduced in 5.14 with commit 13adac032982c61bb590669e8e87e51558917ca1 and fixed in 5.15.80 with commit 88da008e5e2f9753726ea5a51ef2eb144e9de927
	Issue introduced in 5.14 with commit 13adac032982c61bb590669e8e87e51558917ca1 and fixed in 6.0.10 with commit 25a270343b0f16e1f6e65f541a15975a35e238ff
	Issue introduced in 5.14 with commit 13adac032982c61bb590669e8e87e51558917ca1 and fixed in 6.1 with commit f7c125bd79f50ec6094761090be81d02726ec6f4

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-2022-49817
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/mhi_net.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/88da008e5e2f9753726ea5a51ef2eb144e9de927
	https://git.kernel.org/stable/c/25a270343b0f16e1f6e65f541a15975a35e238ff
	https://git.kernel.org/stable/c/f7c125bd79f50ec6094761090be81d02726ec6f4