Riskcovery

CVE-2025-40239

net: phy: micrel: always set shared->phydev for LAN8814

State
Published
Severity
Not scored
Published
Dec 4, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 to before da1ef8e9eb5d4a12bec32d11636e521e7d529b9eAffected
  • b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 to before b093b06826b836c2824858669db080c190c04715Affected
  • b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 to before 399d10934740ae8cdaa4e3245f7c5f6c332da844Affected
LinuxLinux
  • 6.10Affected
  • before 6.10Not affected
  • 6.12.56 through 6.12.*Not affected
  • 6.17.6 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.