linux-cve-announce - CVE-2022-50137: RDMA/irdma: Fix a window for use-after-free

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Message-ID: <2025061817-CVE-2022-50137-c539@gregkh>
Date: Wed, 18 Jun 2025 13:03:22 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50137: RDMA/irdma: Fix a window for use-after-free

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

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

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

RDMA/irdma: Fix a window for use-after-free

During a destroy CQ an interrupt may cause processing of a CQE after CQ
resources are freed by irdma_cq_free_rsrc(). Fix this by moving the call
to irdma_cq_free_rsrc() after the irdma_sc_cleanup_ceqes(), which is
called under the cq_lock.

The Linux kernel CVE team has assigned CVE-2022-50137 to this issue.


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

	Issue introduced in 5.14 with commit b48c24c2d710cf34810c555dcef883a3d35a9c08 and fixed in 5.15.61 with commit 92520864ef9f912f38b403d172a0ded020683d55
	Issue introduced in 5.14 with commit b48c24c2d710cf34810c555dcef883a3d35a9c08 and fixed in 5.18.18 with commit 0abf2eef80295923b819ce89ff9edc1fe61be17c
	Issue introduced in 5.14 with commit b48c24c2d710cf34810c555dcef883a3d35a9c08 and fixed in 5.19.2 with commit 350ac793a03c8a30a3f2b27fc282cd1c67070763
	Issue introduced in 5.14 with commit b48c24c2d710cf34810c555dcef883a3d35a9c08 and fixed in 6.0 with commit 8ecef7890b3aea78c8bbb501a4b5b8134367b821

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-2022-50137
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/hw/irdma/verbs.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/92520864ef9f912f38b403d172a0ded020683d55
	https://git.kernel.org/stable/c/0abf2eef80295923b819ce89ff9edc1fe61be17c
	https://git.kernel.org/stable/c/350ac793a03c8a30a3f2b27fc282cd1c67070763
	https://git.kernel.org/stable/c/8ecef7890b3aea78c8bbb501a4b5b8134367b821