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DEBIAN-CVE-2025-40239

DEBIAN-CVE-2025-40239 PUBLISHED CVSS 8.699999809265137 HIGH

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.

Risk Scores

CVSS 4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected Products

VendorProductVersions
Debian:14linux0, 6.12.38-1, 6.12.43-1
Debian:13linux0, 6.12.38-1, 6.12.41-1

Timeline

  • Dec 4, 2025 CVE Published
  • Apr 28, 2026 CVE Updated
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