In the Linux kernel, the following vulnerability has been resolved:
net/mdiobus: Fix potential out-of-bounds clause 45 read/write access
When using publicly available tools like 'mdio-tools' to read/write data
from/to network interface and its PHY via C45 (clause 45) mdiobus,
there is no verification of parameters passed to the ioctl and
it accepts any mdio address.
Currently there is support for 32 addresses in kernel via PHY_MAX_ADDR define,
but it is possible to pass higher value than that via ioctl.
While read/write operation should generally fail in this case,
mdiobus provides stats array, where wrong address may allow out-of-bounds
read/write.
Fix that by adding address verification before C45 read/write operation.
While this excludes this access from any statistics, it improves security of
read/write operation.
References
Configurations
Configuration 1 (hide)
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History
20 Nov 2025, 21:36
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| Summary |
|
|
| CWE | CWE-125 | |
| References | () https://git.kernel.org/stable/c/260388f79e94fb3026c419a208ece8358bb7b555 - Patch | |
| References | () https://git.kernel.org/stable/c/31bf7b2b92563a352788cf9df3698682f659bacc - Patch | |
| References | () https://git.kernel.org/stable/c/4ded22f7f3ce9714ed72c3e9c68fea1cb9388ae7 - Patch | |
| References | () https://git.kernel.org/stable/c/abb0605ca00979a49572a6516f6db22c3dc57223 - Patch |
03 Jul 2025, 09:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-07-03 09:15
Updated : 2025-11-20 21:36
NVD link : CVE-2025-38110
Mitre link : CVE-2025-38110
CVE.ORG link : CVE-2025-38110
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read
