linux-cve-announce - CVE-2022-49671: RDMA/cm: Fix memory leak in ib_cm_insert

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Message-ID: <2025022624-CVE-2022-49671-62fb@gregkh>
Date: Wed, 26 Feb 2025 03:23:54 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49671: RDMA/cm: Fix memory leak in ib_cm_insert_listen

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

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

RDMA/cm: Fix memory leak in ib_cm_insert_listen

cm_alloc_id_priv() allocates resource for the cm_id_priv. When
cm_init_listen() fails it doesn't free it, leading to memory leak.

Add the missing error unwind.

The Linux kernel CVE team has assigned CVE-2022-49671 to this issue.


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

	Issue introduced in 5.7 with commit 98f67156a80f37db70ec64787020b1f9bc8aea8c and fixed in 5.10.129 with commit b0cab8b517aeaf2592c3479294f934209c41a26f
	Issue introduced in 5.7 with commit 98f67156a80f37db70ec64787020b1f9bc8aea8c and fixed in 5.15.53 with commit 889000874c1204e47c7f2a4945db262a47e7efc9
	Issue introduced in 5.7 with commit 98f67156a80f37db70ec64787020b1f9bc8aea8c and fixed in 5.18.10 with commit 2febf09a8a8ae4accf908f043f1bab1421056568
	Issue introduced in 5.7 with commit 98f67156a80f37db70ec64787020b1f9bc8aea8c and fixed in 5.19 with commit 2990f223ffa7bb25422956b9f79f9176a5b38346

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-2022-49671
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/infiniband/core/cm.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/b0cab8b517aeaf2592c3479294f934209c41a26f
	https://git.kernel.org/stable/c/889000874c1204e47c7f2a4945db262a47e7efc9
	https://git.kernel.org/stable/c/2febf09a8a8ae4accf908f043f1bab1421056568
	https://git.kernel.org/stable/c/2990f223ffa7bb25422956b9f79f9176a5b38346