linux-cve-announce - CVE-2023-52702: net: openvswitch: fix possible memory leak in ovs_meter_cmd

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Message-ID: <2024052156-CVE-2023-52702-ebca@gregkh>
Date: Tue, 21 May 2024 17:23:00 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-52702: net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()

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

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

net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()

old_meter needs to be free after it is detached regardless of whether
the new meter is successfully attached.

The Linux kernel CVE team has assigned CVE-2023-52702 to this issue.


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

	Issue introduced in 5.8 with commit c7c4c44c9a95 and fixed in 5.10.169 with commit c0f65ee0a332
	Issue introduced in 5.8 with commit c7c4c44c9a95 and fixed in 5.15.95 with commit 1563e998a938
	Issue introduced in 5.8 with commit c7c4c44c9a95 and fixed in 6.1.13 with commit e336a9e08618
	Issue introduced in 5.8 with commit c7c4c44c9a95 and fixed in 6.2 with commit 2fa28f5c6fcb

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-2023-52702
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/openvswitch/meter.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/c0f65ee0a3329eb4b94beaef0268633696e2d0c6
	https://git.kernel.org/stable/c/1563e998a938f095548054ef09e277b562b79536
	https://git.kernel.org/stable/c/e336a9e08618203a456fb5367f1387b14554f55e
	https://git.kernel.org/stable/c/2fa28f5c6fcbfc794340684f36d2581b4f2d20b5