CVE-2026-64249

What the bug is

Move of_node_put(child_region) after the error print to avoid accessing freed memory when pr_err() references child_region. [ Yilun: Fix the Fixes tag ]

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/fpga/of-fpga-region.c

What this is

FPGA MANAGER FRAMEWORKMAINTAINERS section matched on drivers/fpga/ · linux-fpga@vger.kernel.org · Maintained

Kernel module

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

Check it on the machine

grep -wE 'CONFIG_FPGA|CONFIG_OF_FPGA_REGION' /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_FPGA, CONFIG_OF_FPGA_REGION

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

2026-07-24 (3 months ago)source

CVSS

no vector published, unrated

Attack vector

not published

EPSS

0.12%, higher than 1.6% of all CVEssource

CISA KEV

not listedthe KEV catalogue

Debian urgency

not yet assignedsource

Subsystem

drivers/fpga

Upstream fixes

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

Introduced	Fixed in	Commit
4.10	5.10.260	e918942bcc53
4.10	5.15.211	866184fc7ae4
4.10	6.1.177	070b0ce947b1
4.10	6.6.144	fbaf509ad7cb
4.10	6.12.95	e79afcb0a66d
4.10	6.18.38	369496d885b4
4.10	7.1.3	5e098e40e8ba
4.10	7.2	54f3c5643ec5

Debian advisories