linux-cve-announce - CVE-2022-50060: octeontx2-af: Fix mcam entry resource leak

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Message-ID: <2025061849-CVE-2022-50060-e6cf@gregkh>
Date: Wed, 18 Jun 2025 13:02:05 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50060: octeontx2-af: Fix mcam entry resource leak

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

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

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

octeontx2-af: Fix mcam entry resource leak

The teardown sequence in FLR handler returns if no NIX LF
is attached to PF/VF because it indicates that graceful
shutdown of resources already happened. But there is a
chance of all allocated MCAM entries not being freed by
PF/VF. Hence free mcam entries even in case of detached LF.

The Linux kernel CVE team has assigned CVE-2022-50060 to this issue.


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

	Issue introduced in 5.0 with commit c554f9c1574e022821260b24b043a4277e8ec5d8 and fixed in 5.15.63 with commit dc5be2d4f9285efe0d16f1bf00250df91d05d809
	Issue introduced in 5.0 with commit c554f9c1574e022821260b24b043a4277e8ec5d8 and fixed in 5.19.4 with commit cc32347f48111eea8d0165538c92aca92ede83f6
	Issue introduced in 5.0 with commit c554f9c1574e022821260b24b043a4277e8ec5d8 and fixed in 6.0 with commit 3f8fe40ab7730cf8eb6f8b8ff412012f7f6f8f48

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-2022-50060
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/marvell/octeontx2/af/rvu.c
	drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.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/dc5be2d4f9285efe0d16f1bf00250df91d05d809
	https://git.kernel.org/stable/c/cc32347f48111eea8d0165538c92aca92ede83f6
	https://git.kernel.org/stable/c/3f8fe40ab7730cf8eb6f8b8ff412012f7f6f8f48