CVE-2025-40239
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.
How to fix
- Linux Linuxda1ef8e9eb5d4a12bec32d11636e521e7d529b9e, b093b06826b836c2824858669db080c190c04715, 399d10934740ae8cdaa4e3245f7c5f6c332da844 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 ≤ v < da1ef8e9eb5d4a12bec32d11636e521e7d529b9e, b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 ≤ v < b093b06826b836c2824858669db080c190c04715, b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 ≤ v < 399d10934740ae8cdaa4e3245f7c5f6c332da844, 6.10 | da1ef8e9eb5d4a12bec32d11636e521e7d529b9e, b093b06826b836c2824858669db080c190c04715, 399d10934740ae8cdaa4e3245f7c5f6c332da844 |
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