Unscored CVE-2026-64165 EUVD-2026-45850GHSA-w8wx-87mq-w4r7

ARM: integrator: Fix early initialization

Published Jul 19, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.17 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-7.0 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.15 Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.17 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fde-7.0 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-7.0 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-7.0 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.17 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-7.0 Package: linux-nvidia-bos Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.14 Package: linux-oem-6.17 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oem-7.0 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-oracle-7.0 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.17 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-riscv-7.0 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

ARM: integrator: Fix early initialization

Starting with commit bdb249fce9ad4 ("ARM: integrator: read counter using
syscon/regmap"), intcp_init_early calls syscon_regmap_lookup_by_compatible
which in turn calls of_syscon_register. This function allocates memory.
Since the memory management code has not been initialized at that time,
the call always fails. It either returns -ENOMEM or crashes as follows.

Unable to handle kernel NULL pointer dereference at virtual address 0000000c when read
[0000000c] *pgd=00000000
Internal error: Oops: 5 [#1] ARM
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT
Hardware name: ARM Integrator/CP (Device Tree)
PC is at __kmalloc_cache_noprof+0xec/0x39c
LR is at __kmalloc_cache_noprof+0x34/0x39c
...
Call trace:
__kmalloc_cache_noprof from of_syscon_register+0x7c/0x310
of_syscon_register from device_node_get_regmap+0xa4/0xb0
device_node_get_regmap from intcp_init_early+0xc/0x40
intcp_init_early from start_kernel+0x60/0x688
start_kernel from 0x0

The crash is seen due to a dereferenced pointer which is not supposed to be
NULL but is NULL if the memory management subsystem has not been
initialized. The crash is not seen with all versions of gcc. Some versions
such as gcc 9.x apparently do not dereference the pointer, presumably if
tracing is disabled. The problem has been reproduced with gcc 10.x, 11.x,
and 13.x. Either case, if the crash is not seen, the call to
syscon_regmap_lookup_by_compatible returns -ENOMEM, and
sched_clock_register is never called.

Fix the problem by moving the early initialization code into the standard
machine initialization code.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	4.9	5.10.258

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	7.0.12-1	—
Debian 13	linux	6.12.94-1	—
Debian 12	linux	6.1.176-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu Nvidia-BlueField 24.04 LTS	linux-bluefield	6.8.0-1030.35	—
Ubuntu Nvidia-BlueField 22.04 LTS	linux-bluefield	5.15.0-1096.98	—
Ubuntu 26.04 LTS	linux	7.0.0-28.28	—
Ubuntu 26.04 LTS	linux-aws +2	7.0.0-1009.9	USN-8618-1, USN-8603-1
Ubuntu 26.04 LTS	linux-gcp +1	7.0.0-1008.8	USN-8593-1
Ubuntu 26.04 LTS	linux-gke	7.0.0-1003.4	—
Ubuntu 26.04 LTS	linux-ibm +1	7.0.0-1010.10	USN-8603-1, USN-8593-1
Ubuntu 26.04 LTS	linux-nvidia	7.0.0-1016.16	USN-8663-1
Ubuntu 26.04 LTS	linux-nvidia-bos	7.0.0-2016.16	USN-8664-1
Ubuntu 26.04 LTS	linux-raspi	7.0.0-1015.15	USN-8618-1
Ubuntu 26.04 LTS	linux-riscv +1	7.0.0-28.28.1	—
Ubuntu 24.04 LTS	linux	6.8.0-139.139	USN-8729-1
Ubuntu 24.04 LTS	linux-aws	6.8.0-1064.67	USN-8729-6
Ubuntu 24.04 LTS	linux-azure-7.0	7.0.0-1014.14~24.04.1	USN-8728-2
Ubuntu 24.04 LTS	linux-azure-fde	6.8.0-1065.72	—
Ubuntu 24.04 LTS	linux-azure-fde-7.0	7.0.0-1013.13~24.04.1	—
Ubuntu 24.04 LTS	linux-gcp +1	6.8.0-1067.75	USN-8761-1, USN-8729-1
Ubuntu 24.04 LTS	linux-gcp-7.0 +1	7.0.0-1011.11~24.04.1	USN-8728-3, USN-8728-1
Ubuntu 24.04 LTS	linux-gke	6.8.0-1062.70	USN-8729-1
Ubuntu 24.04 LTS	linux-gkeop	6.8.0-1049.53	USN-8729-1
Ubuntu 24.04 LTS	linux-hwe-7.0	7.0.0-28.28~24.04.1	—
Ubuntu 24.04 LTS	linux-ibm	6.8.0-1064.65	USN-8729-3
Ubuntu 24.04 LTS	linux-lowlatency	6.8.0-139.139.1	USN-8729-4
Ubuntu 24.04 LTS	linux-nvidia	6.8.0-1062.65	USN-8729-1
Ubuntu 24.04 LTS	linux-nvidia-7.0	7.0.0-1016.16~24.04.1	USN-8663-1
Ubuntu 24.04 LTS	linux-nvidia-lowlatency	6.8.0-1062.65.1	USN-8729-1
Ubuntu 24.04 LTS	linux-nvidia-tegra	6.8.0-1035.38	USN-8781-1
Ubuntu 24.04 LTS	linux-oracle	6.8.0-1061.64	USN-8802-1
Ubuntu 24.04 LTS	linux-raspi	6.8.0-1064.68	USN-8729-1
Ubuntu 24.04 LTS	linux-riscv +28	No fix yet	—
Ubuntu 24.04 LTS	linux-riscv-7.0	7.0.0-28.28.1~24.04.3	—
Ubuntu 24.04 LTS	linux-vmware	6.8.0-1008.8	—
Ubuntu 24.04 LTS	linux-xilinx	6.8.0-1036.37	USN-8729-3
Ubuntu 22.04 LTS	linux	5.15.0-186.196	USN-8575-1
Ubuntu 22.04 LTS	linux-aws	5.15.0-1112.119	USN-8575-2
Ubuntu 22.04 LTS	linux-aws-6.8	6.8.0-1064.67~22.04.1	USN-8729-6
Ubuntu 22.04 LTS	linux-azure +1	5.15.0-1117.126	USN-8610-1, USN-8575-3
Ubuntu 22.04 LTS	linux-azure-fde-6.8	6.8.0-1065.72~22.04.1	—
Ubuntu 22.04 LTS	linux-gcp	5.15.0-1112.122	USN-8575-1
Ubuntu 22.04 LTS	linux-gcp-6.8 +1	6.8.0-1067.75~22.04.1	USN-8761-3, USN-8729-3
Ubuntu 22.04 LTS	linux-gke	5.15.0-1108.114	USN-8575-1
Ubuntu 22.04 LTS	linux-gkeop	5.15.0-1095.103	USN-8575-1
Ubuntu 22.04 LTS	linux-hwe-6.8	6.8.0-149.149~22.04.1	USN-9066-1
Ubuntu 22.04 LTS	linux-ibm	5.15.0-1106.110	USN-8575-2
Ubuntu 22.04 LTS	linux-ibm-6.8	6.8.0-1066.67~22.04.1	USN-8906-1
Ubuntu 22.04 LTS	linux-intel-iotg	5.15.0-1107.113	USN-8620-4
Ubuntu 22.04 LTS	linux-kvm	5.15.0-1104.109	USN-8575-1
Ubuntu 22.04 LTS	linux-lowlatency	5.15.0-184.194	USN-8575-1
Ubuntu 22.04 LTS	linux-lowlatency-hwe-6.8	6.8.0-139.139.1~22.04.1	USN-8729-4
Ubuntu 22.04 LTS	linux-nvidia	5.15.0-1107.108	USN-8575-2
Ubuntu 22.04 LTS	linux-nvidia-6.8	6.8.0-1062.65~22.04.1	USN-8729-1
Ubuntu 22.04 LTS	linux-nvidia-tegra	5.15.0-1064.66	USN-8576-2
Ubuntu 22.04 LTS	linux-nvidia-tegra-igx	5.15.0-1053.53	USN-8576-2
Ubuntu 22.04 LTS	linux-oracle	5.15.0-1109.115	USN-8575-3
Ubuntu 22.04 LTS	linux-oracle-6.8	6.8.0-1061.64~22.04.1	USN-8802-1
Ubuntu 22.04 LTS	linux-raspi	5.15.0-1106.109	USN-8668-2
Ubuntu 22.04 LTS	linux-riscv +32	No fix yet	—
Ubuntu 22.04 LTS	linux-riscv-6.8	6.8.0-139.139~22.04.1	—
Ubuntu 22.04 LTS	linux-xilinx-zynqmp	5.15.0-1075.79	USN-8575-1

Show 16 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu 20.04 LTS	linux-gke +28	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp +14	No fix yet	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—
Ubuntu Pro Realtime 24.04 LTS	linux-raspi-realtime	6.8.0-2053.55	USN-8729-2
Ubuntu Pro Realtime 24.04 LTS	linux-realtime	6.8.1-1059.60	USN-8729-1
Ubuntu Pro Realtime 24.04 LTS	linux-realtime-6.14 +1	No fix yet	—
Ubuntu Pro Realtime 22.04 LTS	linux-intel-iot-realtime	5.15.0-1104.106	USN-8620-3
Ubuntu Pro Realtime 22.04 LTS	linux-realtime	5.15.0-1111.120	USN-8575-1
Ubuntu Pro Realtime 22.04 LTS	linux-realtime-6.8	6.8.1-1059.60~22.04.1	USN-8729-1
Ubuntu Pro FIPS 20.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS 18.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS-updates 24.04 LTS	linux-aws-fips	6.8.0-1064.67+fips1	USN-8729-5
Ubuntu Pro FIPS-updates 24.04 LTS	linux-fips	6.8.0-139.139+fips1	USN-8729-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-gcp-fips +1	6.8.0-1067.75+fips1	USN-8761-2, USN-8729-1
Ubuntu Pro FIPS-updates 22.04 LTS	linux-aws-fips	5.15.0-1112.119+fips1	USN-8575-2
Ubuntu Pro FIPS-updates 22.04 LTS	linux-azure-fips	5.15.0-1117.126+fips1	USN-8620-2
Ubuntu Pro FIPS-updates 22.04 LTS	linux-fips	5.15.0-186.196+fips1	USN-8575-2
Ubuntu Pro FIPS-updates 22.04 LTS	linux-gcp-fips	5.15.0-1112.122+fips1	USN-8575-1
Ubuntu Pro FIPS-updates 20.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS-updates 18.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS-preview 22.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro 20.04 LTS	linux +10	No fix yet	—
Ubuntu Pro 20.04 LTS	linux-aws-5.15	5.15.0-1112.119~20.04.1	USN-8575-2
Ubuntu Pro 20.04 LTS	linux-azure-5.15	5.15.0-1117.126~20.04.1	USN-8620-1
Ubuntu Pro 20.04 LTS	linux-azure-fde-5.15	5.15.0-1117.126~20.04.2	USN-8620-1
Ubuntu Pro 20.04 LTS	linux-gcp-5.15	5.15.0-1112.122~20.04.1	USN-8668-1
Ubuntu Pro 20.04 LTS	linux-hwe-5.15	5.15.0-186.196~20.04.1	USN-8575-1
Ubuntu Pro 20.04 LTS	linux-ibm-5.15 +1	5.15.0-1106.110~20.04.1	—
Ubuntu Pro 20.04 LTS	linux-intel-iotg-5.15	5.15.0-1107.113~20.04.1	USN-8620-3
Ubuntu Pro 20.04 LTS	linux-lowlatency-hwe-5.15	5.15.0-184.194~20.04.1	USN-8575-1
Ubuntu Pro 20.04 LTS	linux-nvidia-tegra-5.15	5.15.0-1064.66~20.04.1	USN-8576-1
Ubuntu Pro 20.04 LTS	linux-oracle-5.15	5.15.0-1109.115~20.04.1	USN-8620-1
Ubuntu Pro 18.04 LTS	linux +12	No fix yet	—
Ubuntu Pro 16.04 LTS	linux-gcp +4	No fix yet	—
Ubuntu Pro 14.04 LTS	linux-azure	No fix yet	—

Advisories 34

USN-9066-1 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
WID-SEC-2026-2403 Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 12, 2026
USN-8728-1 linux-gcp-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
USN-8728-2 linux-azure-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
USN-8728-3 linux-oracle-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
USN-8575-1 linux, linux-gcp, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-realtime, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8575-2 linux-aws, linux-aws-5.15, linux-aws-fips, linux-fips, linux-ibm, linux-nvidia vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8906-1 linux-ibm-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-1 linux, linux-fips, linux-gcp, linux-gcp-fips, linux-gke, linux-gkeop, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-raspi, linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8593-1 linux-ibm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8620-1 linux-azure-5.15, linux-azure-fde-5.15, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8620-3 linux-intel-iot-realtime, linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8664-1 linux-nvidia-bos vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8603-1 linux-azure, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8663-1 linux-nvidia, linux-nvidia-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8610-1 linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8668-2 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8575-3 linux-azure, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8668-1 linux-gcp-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8576-1 linux-nvidia-tegra-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8761-3 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-6 linux-aws, linux-aws-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8576-2 linux-nvidia-tegra, linux-nvidia-tegra-igx vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8781-1 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-4 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8618-1 linux-aws, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8620-4 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8802-1 linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-5 linux-aws-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8620-2 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-3 linux-gcp-6.8, linux-ibm, linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8729-2 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8761-2 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
USN-8761-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026

References