CVE-2025-40239

linux: In the Linux kernel, the following vulnerability has been resolved: net: phy: micrel: always set shared->phydev for...

CVE-2025-40239 is fixed in 49 products on 1 platform, first by DEBIAN-CVE-2025-40239, released December 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
IMPORTANT
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0021
11th percentile

In the Linux kernel, the following vulnerability has been resolved: net: phy: micrel: always set shared->phydev for LAN8814 Currently, during the LAN8814 PTP probe shared->phydev is only set if PTP clock gets actually set, otherwise the function will return before setting it. This is an issue as shared->phydev is unconditionally being used when IRQ is being handled, especially in lan8814_gpio_process_cap and since it was not set it will cause a NULL pointer exception and crash the kernel. So, simply always set shared->phydev to avoid the NULL pointer exception.

Where it's fixed

ProductFixed inFixReleased
Linux
dtb-aarch64 · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-64kb · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-64kb · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-azure · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-azure · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-default · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-default · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-default-base · opensuse-leap 16.0 6.12.0-160000.9.1.160000.2.6 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-default-base · sles 16.0 6.12.0-160000.9.1.160000.2.6 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-docs · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-docs · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-kvmsmall · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-kvmsmall · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-obs-build · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-obs-qa · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-obs-qa · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-rt · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-source · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-source · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-syms · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-syms · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
kernel-uek · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-devel · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-devel · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-deprecated · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-deprecated · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-desktop · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-desktop · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-extra · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-extra · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-extra-netfilter · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-extra-netfilter · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-usb · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-usb · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-wireless · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-debug-modules-wireless · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-devel · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-devel · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-doc · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-doc · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-deprecated · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-deprecated · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-desktop · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-desktop · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-extra · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-extra · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-extra-netfilter · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-extra-netfilter · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-usb · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-usb · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-wireless · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-modules-wireless · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-tools · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek-tools · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-devel · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-devel · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-core · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-core · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-deprecated · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-deprecated · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-desktop · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-desktop · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-extra · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-extra · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-extra-netfilter · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-extra-netfilter · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-usb · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-usb · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-wireless · ol 10 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-uek64k-modules-wireless · ol 9 0:6.12.0-107.59.3.2.el9uek ELSA-2026-50006 Jan 13, 2026
kernel-zfcpdump · opensuse-leap 16.0 6.12.0-160000.9.1 OPENSUSE-SU-2026:20145-1 Feb 2, 2026
kernel-zfcpdump · sles 16.0 6.12.0-160000.9.1 SUSE-SU-2026:20220-1 Feb 2, 2026
linux · Debian 13.5 (trixie) 6.12.57-1 DEBIAN-CVE-2025-40239 Dec 4, 2025
linux · Debian 14 6.17.6-1 DEBIAN-CVE-2025-40239 Dec 4, 2025

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