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I. Basic Information for CVE-2025-40239
Vulnerability Information

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Vulnerability Title
net: phy: micrel: always set shared->phydev for LAN8814
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞,该漏洞源于LAN8814未始终设置shared->phydev,可能导致空指针异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
LinuxLinux b3f1a08fcf0dd58d99b14b9f8fbd1929f188b746 ~ da1ef8e9eb5d4a12bec32d11636e521e7d529b9e -
LinuxLinux 6.10 -
II. Public POCs for CVE-2025-40239
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III. Intelligence Information for CVE-2025-40239
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IV. Related Vulnerabilities
V. Comments for CVE-2025-40239

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