linux-cve-announce - CVE-2024-53064: idpf: fix idpf_vc_core

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Message-ID: <2024111932-CVE-2024-53064-119c@gregkh>
Date: Tue, 19 Nov 2024 18:22:35 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53064: idpf: fix idpf_vc_core_init error path

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

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

idpf: fix idpf_vc_core_init error path

In an event where the platform running the device control plane
is rebooted, reset is detected on the driver. It releases
all the resources and waits for the reset to complete. Once the
reset is done, it tries to build the resources back. At this
time if the device control plane is not yet started, then
the driver timeouts on the virtchnl message and retries to
establish the mailbox again.

In the retry flow, mailbox is deinitialized but the mailbox
workqueue is still alive and polling for the mailbox message.
This results in accessing the released control queue leading to
null-ptr-deref. Fix it by unrolling the work queue cancellation
and mailbox deinitialization in the reverse order which they got
initialized.

The Linux kernel CVE team has assigned CVE-2024-53064 to this issue.

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

	Issue introduced in 6.7 with commit 4930fbf419a7 and fixed in 6.11.8 with commit 683fcd90ba22
	Issue introduced in 6.7 with commit 4930fbf419a7 and fixed in 6.12 with commit 9b58031ff96b

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-2024-53064
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/intel/idpf/idpf_lib.c
	drivers/net/ethernet/intel/idpf/idpf_virtchnl.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/683fcd90ba22507ebeb1921a26dfe77efff8c266
	https://git.kernel.org/stable/c/9b58031ff96b84a38d7b73b23c7ecfb2e0557f43