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Message-ID: <2025111251-CVE-2025-40116-3942@gregkh>
Date: Wed, 12 Nov 2025 19:23:52 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-40116: usb: host: max3421-hcd: Fix error pointer dereference in probe cleanup
From: Greg Kroah-Hartman <gregkh@...nel.org>
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
usb: host: max3421-hcd: Fix error pointer dereference in probe cleanup
The kthread_run() function returns error pointers so the
max3421_hcd->spi_thread pointer can be either error pointers or NULL.
Check for both before dereferencing it.
The Linux kernel CVE team has assigned CVE-2025-40116 to this issue.
Affected and fixed versions
===========================
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 5.4.301 with commit 89838fe5c6c010ff8d3924f22afd9c18c5c95310
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 5.10.246 with commit 3facf69a735e730ae36387f18780fe420708aa91
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 5.15.195 with commit e0e0ce06f3571be9b26790e4df56ba37b1de8543
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 6.1.156 with commit 3723c3dda1cc82c9bbca08fcbd46705a361bfd56
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 6.6.112 with commit b0439e3762ac9ea580f714e1504a1827d1ad32f5
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 6.12.53 with commit e68ea6de1d0551f90d7a2c75f82cb3ebe5e397dc
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 6.17.3 with commit b682ce44bf20ada752a2f6ce70d5a575c56f6a35
Issue introduced in 3.16 with commit 05dfa5c9bc37933181b619e42ec0eeb41ef31362 and fixed in 6.18-rc1 with commit 186e8f2bdba551f3ae23396caccd452d985c23e3
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-2025-40116
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/usb/host/max3421-hcd.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/89838fe5c6c010ff8d3924f22afd9c18c5c95310
https://git.kernel.org/stable/c/3facf69a735e730ae36387f18780fe420708aa91
https://git.kernel.org/stable/c/e0e0ce06f3571be9b26790e4df56ba37b1de8543
https://git.kernel.org/stable/c/3723c3dda1cc82c9bbca08fcbd46705a361bfd56
https://git.kernel.org/stable/c/b0439e3762ac9ea580f714e1504a1827d1ad32f5
https://git.kernel.org/stable/c/e68ea6de1d0551f90d7a2c75f82cb3ebe5e397dc
https://git.kernel.org/stable/c/b682ce44bf20ada752a2f6ce70d5a575c56f6a35
https://git.kernel.org/stable/c/186e8f2bdba551f3ae23396caccd452d985c23e3
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