linux-cve-announce - CVE-2024-53681: nvmet: Don't overflow subsysnqn

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Message-ID: <2025011532-CVE-2024-53681-e199@gregkh>
Date: Wed, 15 Jan 2025 14:10:34 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53681: nvmet: Don't overflow subsysnqn

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

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

nvmet: Don't overflow subsysnqn

nvmet_root_discovery_nqn_store treats the subsysnqn string like a fixed
size buffer, even though it is dynamically allocated to the size of the
string.

Create a new string with kstrndup instead of using the old buffer.

The Linux kernel CVE team has assigned CVE-2024-53681 to this issue.


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

	Issue introduced in 6.9 with commit 95409e277d8343810adf8700d29d4329828d452b and fixed in 6.12.9 with commit 86645d8d062af3fdcbdaa0a289b95de55bca827d
	Issue introduced in 6.9 with commit 95409e277d8343810adf8700d29d4329828d452b and fixed in 6.13-rc6 with commit 4db3d750ac7e894278ef1cb1c53cc7d883060496

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-2024-53681
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/nvme/target/configfs.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/86645d8d062af3fdcbdaa0a289b95de55bca827d
	https://git.kernel.org/stable/c/4db3d750ac7e894278ef1cb1c53cc7d883060496