linux-cve-announce - CVE-2025-22007: Bluetooth: Fix error code in chan_alloc_skb

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Message-ID: <2025040350-CVE-2025-22007-40b3@gregkh>
Date: Thu,  3 Apr 2025 08:17:59 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-22007: Bluetooth: Fix error code in chan_alloc_skb_cb()

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

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

Bluetooth: Fix error code in chan_alloc_skb_cb()

The chan_alloc_skb_cb() function is supposed to return error pointers on
error.  Returning NULL will lead to a NULL dereference.

The Linux kernel CVE team has assigned CVE-2025-22007 to this issue.


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

	Issue introduced in 3.17 with commit 6b8d4a6a03144c5996f98db7f8256267b0d72a3a and fixed in 6.1.132 with commit 788ae2ae4cf484e248b5bc29211c7ac6510e3e92
	Issue introduced in 3.17 with commit 6b8d4a6a03144c5996f98db7f8256267b0d72a3a and fixed in 6.6.85 with commit ecd06ad0823a90b4420c377ef8917e44e23ee841
	Issue introduced in 3.17 with commit 6b8d4a6a03144c5996f98db7f8256267b0d72a3a and fixed in 6.12.21 with commit 761b7c36addd22c7e6ceb05caaadc3b062d99faa
	Issue introduced in 3.17 with commit 6b8d4a6a03144c5996f98db7f8256267b0d72a3a and fixed in 6.13.9 with commit a78692ec0d1e17a96b09f2349a028878f5b305e4
	Issue introduced in 3.17 with commit 6b8d4a6a03144c5996f98db7f8256267b0d72a3a and fixed in 6.14 with commit 72d061ee630d0dbb45c2920d8d19b3861c413e54

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-2025-22007
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:
	net/bluetooth/6lowpan.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/788ae2ae4cf484e248b5bc29211c7ac6510e3e92
	https://git.kernel.org/stable/c/ecd06ad0823a90b4420c377ef8917e44e23ee841
	https://git.kernel.org/stable/c/761b7c36addd22c7e6ceb05caaadc3b062d99faa
	https://git.kernel.org/stable/c/a78692ec0d1e17a96b09f2349a028878f5b305e4
	https://git.kernel.org/stable/c/72d061ee630d0dbb45c2920d8d19b3861c413e54