Unscored CVE-2025-71272 EUVD-2025-209672GHSA-hgp5-3fhg-p5cf

most: core: fix resource leak in most_register_interface error paths

Published May 6, 2026 · Updated Oct 21, 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-5.8 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-azure 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-5.8 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-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-6.2 Package: linux-azure-fde-6.8 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-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-5.8 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-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-5.8 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-edge Package: linux-ibm Package: linux-ibm-5.15 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-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-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-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-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi 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-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:

most: core: fix resource leak in most_register_interface error paths

The function most_register_interface() did not correctly release resources
if it failed early (before registering the device). In these cases, it
returned an error code immediately, leaking the memory allocated for the
interface.

Fix this by initializing the device early via device_initialize() and
calling put_device() on all error paths.

The most_register_interface() is expected to call put_device() on
error which frees the resources allocated in the caller. The
put_device() either calls release_mdev() or dim2_release(),
depending on the caller.

Switch to using device_add() instead of device_register() to handle
the split initialization.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	5.6	6.6.160

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	6.19.6-1	—
Debian 13	linux	6.12.85-1	—
Debian 12	linux	No fix yet	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu Nvidia-BlueField 24.04 LTS	linux-bluefield	6.8.0-1026.30	—
Ubuntu Nvidia-BlueField 22.04 LTS	linux-bluefield	No fix yet	—
Ubuntu 25.10	linux +8	No fix yet	—
Ubuntu 24.04 LTS	linux	6.8.0-134.134	USN-8492-1
Ubuntu 24.04 LTS	linux-aws	6.8.0-1060.63	USN-8492-1
Ubuntu 24.04 LTS	linux-azure	6.8.0-1063.71	USN-8606-1
Ubuntu 24.04 LTS	linux-azure-fde	6.8.0-1062.69	USN-8607-1
Ubuntu 24.04 LTS	linux-azure-nvidia	6.8.0-1039.42	—
Ubuntu 24.04 LTS	linux-gcp	6.8.0-1063.69	USN-8492-1
Ubuntu 24.04 LTS	linux-gke	6.8.0-1058.64	USN-8492-2
Ubuntu 24.04 LTS	linux-gkeop	6.8.0-1045.48	USN-8492-2
Ubuntu 24.04 LTS	linux-ibm	6.8.0-1060.61	USN-8492-1
Ubuntu 24.04 LTS	linux-lowlatency	6.8.0-134.134.1	USN-8497-1
Ubuntu 24.04 LTS	linux-nvidia	6.8.0-1058.61	USN-8492-1
Ubuntu 24.04 LTS	linux-nvidia-lowlatency	6.8.0-1058.61.1	USN-8492-2
Ubuntu 24.04 LTS	linux-nvidia-tegra	6.8.0-1029.30	USN-8498-1
Ubuntu 24.04 LTS	linux-oracle	6.8.0-1057.58	USN-8492-1
Ubuntu 24.04 LTS	linux-raspi	6.8.0-1060.64	USN-8492-4
Ubuntu 24.04 LTS	linux-riscv +26	No fix yet	—
Ubuntu 24.04 LTS	linux-xilinx	6.8.0-1032.33	USN-8499-1
Ubuntu 22.04 LTS	linux +49	No fix yet	—
Ubuntu 22.04 LTS	linux-aws-6.8	6.8.0-1060.63~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-azure-6.8	6.8.0-1063.71~22.04.1	USN-8606-1
Ubuntu 22.04 LTS	linux-azure-fde-6.8	6.8.0-1062.69~22.04.1	USN-8609-1
Ubuntu 22.04 LTS	linux-gcp-6.8	6.8.0-1063.69~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-hwe-6.8	6.8.0-136.136~22.04.1	USN-8619-1
Ubuntu 22.04 LTS	linux-ibm-6.8	6.8.0-1060.61~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-lowlatency-hwe-6.8	6.8.0-134.134.1~22.04.1	USN-8497-1
Ubuntu 22.04 LTS	linux-nvidia-6.8	6.8.0-1058.61~22.04.1	USN-8492-1
Ubuntu 22.04 LTS	linux-oracle-6.8	6.8.0-1057.58~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-riscv-6.8	6.8.0-134.134~22.04.1	—

Show 9 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	6.8.0-2049.50	USN-8492-3
Ubuntu Pro Realtime 24.04 LTS	linux-realtime	6.8.1-1055.56	USN-8492-1
Ubuntu Pro Realtime 24.04 LTS	linux-realtime-6.14 +1	No fix yet	—
Ubuntu Pro Realtime 22.04 LTS	linux-realtime +1	No fix yet	—
Ubuntu Pro Realtime 22.04 LTS	linux-realtime-6.8	6.8.1-1055.56~22.04.1	USN-8492-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-aws-fips	6.8.0-1060.63+fips1	USN-8492-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-azure-fips	6.8.0-1062.69+fips1	USN-8492-5
Ubuntu Pro FIPS-updates 24.04 LTS	linux-fips	6.8.0-134.134+fips1	USN-8492-5
Ubuntu Pro FIPS-updates 24.04 LTS	linux-gcp-fips	6.8.0-1063.69+fips1	USN-8492-1
Ubuntu Pro FIPS-updates 22.04 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-aws-5.15 +10	No fix yet	—

Advisories 13

WID-SEC-2026-1405 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
USN-8606-1 linux-azure, linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8607-1 linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8619-1 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8609-1 linux-azure-fde-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8499-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8497-1 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8492-1 linux, linux-aws, linux-aws-fips, linux-gcp, linux-gcp-fips, linux-ibm, linux-nvidia, linux-nvidia-6.8, linux-oracle, linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-2 linux-aws-6.8, linux-gcp-6.8, linux-gke, linux-gkeop, linux-ibm-6.8, linux-nvidia-lowlatency, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8498-1 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-3 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-5 linux-azure-fips, linux-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-4 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026

References