CVE-2026-64301

What the bug is

scmi_regulator_probe() calls of_find_node_by_name() which takes a reference on the returned device node. On the error path where process_scmi_regulator_of_node() fails, the function returns without calling of_node_put() on the child node, leaking the reference. Add of_node_put(np) on the error path to properly release the reference.

Where it lives

The fix touches these files. If the subsystem is one you do not use, the practical exposure is lower, though the package is still the vulnerable one.

drivers/regulator/scmi-regulator.c

What this is

SYSTEM CONTROL & POWER/MANAGEMENT INTERFACE (SCPI/SCMI) Message Protocol driversMAINTAINERS section matched on drivers/regulator/scmi-regulator.c · arm-scmi@vger.kernel.org · Maintained

Kernel module

none to look for. The file would have gone into scmi_regulator, and Debian does not compile it into that module, so finding scmi_regulator in lsmod would say nothing about this CVE.

Check it on the machine

grep -wE 'CONFIG_REGULATOR|CONFIG_REGULATOR_ARM_SCMI' /boot/config-$(uname -r)

Reads the booted kernel's own configuration, on the machine and nowhere else. =y is built in, =m is a module, and an is not set line means the code is not there.

Show whether Debian builds this, per release

Debian does not build this code. In 5 releases below, every kernel flavour Debian publishes has the switch off, so the vulnerable file is compiled into no kernel binary Debian ships.

• bookworm, trixie, forky, sid, bookworm · linux-6.12n

n

not enabled on any flavour - this release does not build the code

Build switches

CONFIG_REGULATOR, CONFIG_REGULATOR_ARM_SCMI

Reads as

all on means the file is compiled; any one off means it is not.

From the configuration Debian publishes for every kernel flavour it builds. It covers only the architectures Debian ships a linux-config package for, and nothing about a kernel you built yourself. Debian's own status above stays authoritative about the source package.MAINTAINERS kbuild Makefiles Debian linux-config packages

Signals

Published

2026-07-25 (3 months ago)source

CVSS

no vector published, unrated

Attack vector

not published

EPSS

0.16%, higher than 4.7% of all CVEssource

CISA KEV

not listedthe KEV catalogue

Debian urgency

not yet assignedsource

Subsystem

drivers/regulator

Upstream fixes

The versions the CNA records as introducing and fixing this, and the commit for each. source

Introduced	Fixed in	Commit
5.11	5.15.212	1e446e8f8c76
5.11	6.1.178	637c11e3d8d4
5.11	6.6.145	e2baf8ea13fb
5.11	6.12.96	3e1441a4d06d
5.11	6.18.39	22cb337370e6
5.11	7.1.4	a935b64548fc
5.11	7.2	fa11039d6cdf

Debian advisories