linux-cve-announce - CVE-2025-38264: nvme-tcp: sanitize request list handling

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Message-ID: <2025070937-CVE-2025-38264-ffd2@gregkh>
Date: Wed,  9 Jul 2025 12:42:56 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38264: nvme-tcp: sanitize request list handling

From: Greg Kroah-Hartman <gregkh@...nel.org>

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

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

nvme-tcp: sanitize request list handling

Validate the request in nvme_tcp_handle_r2t() to ensure it's not part of
any list, otherwise a malicious R2T PDU might inject a loop in request
list processing.

The Linux kernel CVE team has assigned CVE-2025-38264 to this issue.


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

	Fixed in 6.12.36 with commit 78a4adcd3fedb0728436e8094848ebf4c6bae006
	Fixed in 6.15.5 with commit f054ea62598197714a6ca7b3b387a027308f8b13
	Fixed in 6.16-rc1 with commit 0bf04c874fcb1ae46a863034296e4b33d8fbd66c

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-2025-38264
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/host/tcp.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/78a4adcd3fedb0728436e8094848ebf4c6bae006
	https://git.kernel.org/stable/c/f054ea62598197714a6ca7b3b387a027308f8b13
	https://git.kernel.org/stable/c/0bf04c874fcb1ae46a863034296e4b33d8fbd66c