linux-cve-announce - CVE-2025-38641: Bluetooth: btusb: Fix potential NULL dereference on kmalloc failure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025082234-CVE-2025-38641-21d7@gregkh>
Date: Fri, 22 Aug 2025 18:00:49 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38641: Bluetooth: btusb: Fix potential NULL dereference on kmalloc failure

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

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

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

Bluetooth: btusb: Fix potential NULL dereference on kmalloc failure

Avoid potential NULL pointer dereference by checking the return value of
kmalloc and handling allocation failure properly.

The Linux kernel CVE team has assigned CVE-2025-38641 to this issue.


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

	Issue introduced in 6.16 with commit 7d70989fcea7f79afe018a7e34d3486406c7a94e and fixed in 6.16.1 with commit 5029d80bfc30b60ff57c70ccb04e027acb404f6a
	Issue introduced in 6.16 with commit 7d70989fcea7f79afe018a7e34d3486406c7a94e and fixed in 6.17-rc1 with commit b505902c66a282dcb01bcdc015aa1fdfaaa075db

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-2025-38641
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/bluetooth/btusb.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/5029d80bfc30b60ff57c70ccb04e027acb404f6a
	https://git.kernel.org/stable/c/b505902c66a282dcb01bcdc015aa1fdfaaa075db