linux-cve-announce - CVE-2024-57857: RDMA/siw: Remove direct link to net

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Message-ID: <2025011534-CVE-2024-57857-29db@gregkh>
Date: Wed, 15 Jan 2025 14:10:41 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-57857: RDMA/siw: Remove direct link to net_device

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

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

RDMA/siw: Remove direct link to net_device

Do not manage a per device direct link to net_device. Rely
on associated ib_devices net_device management, not doubling
the effort locally. A badly managed local link to net_device
was causing a 'KASAN: slab-use-after-free' exception during
siw_query_port() call.

The Linux kernel CVE team has assigned CVE-2024-57857 to this issue.


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

	Issue introduced in 5.3 with commit bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 and fixed in 6.12.9 with commit 4eafeb4f021c50d13f199239d913b37de3c83135
	Issue introduced in 5.3 with commit bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 and fixed in 6.13-rc6 with commit 16b87037b48889d21854c8e97aec8a1baf2642b3

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-2024-57857
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/sw/siw/siw.h
	drivers/infiniband/sw/siw/siw_cm.c
	drivers/infiniband/sw/siw/siw_main.c
	drivers/infiniband/sw/siw/siw_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/4eafeb4f021c50d13f199239d913b37de3c83135
	https://git.kernel.org/stable/c/16b87037b48889d21854c8e97aec8a1baf2642b3