linux-cve-announce - CVE-2024-53077: rpcrdma: Always release the rpcrdma_device's xa

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Message-ID: <2024111925-CVE-2024-53077-f48f@gregkh>
Date: Tue, 19 Nov 2024 18:31:28 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53077: rpcrdma: Always release the rpcrdma_device's xa_array

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

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

rpcrdma: Always release the rpcrdma_device's xa_array

Dai pointed out that the xa_init_flags() in rpcrdma_add_one() needs
to have a matching xa_destroy() in rpcrdma_remove_one() to release
underlying memory that the xarray might have accrued during
operation.

The Linux kernel CVE team has assigned CVE-2024-53077 to this issue.


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

	Issue introduced in 6.11 with commit 7e86845a0346 and fixed in 6.11.7 with commit 36b7f5a4f300
	Issue introduced in 6.11 with commit 7e86845a0346 and fixed in 6.12 with commit 63a81588cd20

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-2024-53077
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/sunrpc/xprtrdma/ib_client.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/36b7f5a4f300d038270324640ff7c1399245159d
	https://git.kernel.org/stable/c/63a81588cd2025e75fbaf30b65930b76825c456f