CVE-2026-98535

What the bug is

of_clk_get() returns a clock with its reference count incremented, but read_dts_node() only uses it to read the rate and never calls clk_put(). The clock is not stored anywhere, so the reference cannot be released later either. Release the clock once its rate has been read, which also covers the error path taken when the rate is zero.

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/net/ethernet/freescale/fman/fman.c

What this is

FREESCALE QORIQ DPAA FMAN DRIVERMAINTAINERS section matched on drivers/net/ethernet/freescale/fman · netdev@vger.kernel.org · Maintained

Kernel module

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

Check it on the machine

grep -wE 'CONFIG_ETHERNET|CONFIG_FSL_FMAN|CONFIG_NET_VENDOR_FREESCALE' /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 4 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, sidn

n

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

Build switches

CONFIG_ETHERNET, CONFIG_FSL_FMAN, CONFIG_NET_VENDOR_FREESCALE

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

2026-10-18 (today)source

CVSS

no vector published, unrated

Attack vector

not published

EPSS

not scored

CISA KEV

not listedthe KEV catalogue

Debian urgency

not yet assignedsource

Subsystem

drivers/net

Upstream fixes

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

Introduced	Fixed in	Commit
4.5	5.10.271	874fd58b321a
4.5	5.15.222	c2edf376d780
4.5	6.1.189	5c90f99ba74b
4.5	6.6.158	e560bdf62b11
4.5	6.12.112	9fd6d0861ae2
4.5	6.18.55	c2a5e5918586
4.5	7.2.9	cb52f9f188c3
4.5	7.3	a644f09b2090