linux-cve-announce - CVE-2024-56715: ionic: Fix netdev notifier unregister on failure

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Message-ID: <2024122915-CVE-2024-56715-7db1@gregkh>
Date: Sun, 29 Dec 2024 09:48:19 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56715: ionic: Fix netdev notifier unregister on failure

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

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

ionic: Fix netdev notifier unregister on failure

If register_netdev() fails, then the driver leaks the netdev notifier.
Fix this by calling ionic_lif_unregister() on register_netdev()
failure. This will also call ionic_lif_unregister_phc() if it has
already been registered.

The Linux kernel CVE team has assigned CVE-2024-56715 to this issue.


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

	Issue introduced in 5.10 with commit 30b87ab4c0b30e0f681cb7dfaab6c642dd17e454 and fixed in 6.1.122 with commit da93a12876f8b969df7316dc93aac7e725f88252
	Issue introduced in 5.10 with commit 30b87ab4c0b30e0f681cb7dfaab6c642dd17e454 and fixed in 6.6.68 with commit da5736f516a664a9e1ff74902663c64c423045d2
	Issue introduced in 5.10 with commit 30b87ab4c0b30e0f681cb7dfaab6c642dd17e454 and fixed in 6.12.7 with commit ee2e931b2b46de9af7f681258e8ec8e2cd81cfc6
	Issue introduced in 5.10 with commit 30b87ab4c0b30e0f681cb7dfaab6c642dd17e454 and fixed in 6.13-rc4 with commit 9590d32e090ea2751e131ae5273859ca22f5ac14

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-2024-56715
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/pensando/ionic/ionic_lif.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/da93a12876f8b969df7316dc93aac7e725f88252
	https://git.kernel.org/stable/c/da5736f516a664a9e1ff74902663c64c423045d2
	https://git.kernel.org/stable/c/ee2e931b2b46de9af7f681258e8ec8e2cd81cfc6
	https://git.kernel.org/stable/c/9590d32e090ea2751e131ae5273859ca22f5ac14