linux-cve-announce - CVE-2022-49369: amt: fix possible memory leak in amt

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Message-ID: <2025022645-CVE-2022-49369-9a4e@gregkh>
Date: Wed, 26 Feb 2025 03:10:43 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49369: amt: fix possible memory leak in amt_rcv()

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

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

amt: fix possible memory leak in amt_rcv()

If an amt receives packets and it finds socket.
If it can't find a socket, it should free a received skb.
But it doesn't.
So, a memory leak would possibly occur.

The Linux kernel CVE team has assigned CVE-2022-49369 to this issue.


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

	Issue introduced in 5.16 with commit cbc21dc1cfe949e37b2a54c71511579f1899e8d4 and fixed in 5.17.15 with commit 60d9c020c69977e138727b3577bc6a0458325e9c
	Issue introduced in 5.16 with commit cbc21dc1cfe949e37b2a54c71511579f1899e8d4 and fixed in 5.18.4 with commit 4b8032d39b276c52db57ff834c300405b9da2691
	Issue introduced in 5.16 with commit cbc21dc1cfe949e37b2a54c71511579f1899e8d4 and fixed in 5.19 with commit 1a1a0e80e005cbdc2c250fc858e1d8570f4e4acb

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-2022-49369
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/amt.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/60d9c020c69977e138727b3577bc6a0458325e9c
	https://git.kernel.org/stable/c/4b8032d39b276c52db57ff834c300405b9da2691
	https://git.kernel.org/stable/c/1a1a0e80e005cbdc2c250fc858e1d8570f4e4acb