In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix unregister_netdev call order in macb_remove()
When removing a macb device, the driver calls phy_exit() before
unregister_netdev(). This leads to a WARN from kernfs:
------------[ cut here ]------------
kernfs: can not remove 'attached_dev', no directory
WARNING: CPU: 1 PID: 27146 at fs/kernfs/dir.c:1683
Call trace:
kernfs_remove_by_name_ns+0xd8/0xf0
sysfs_remove_link+0x24/0x58
phy_detach+0x5c/0x168
phy_disconnect+0x4c/0x70
phylink_disconnect_phy+0x6c/0xc0 [phylink]
macb_close+0x6c/0x170 [macb]
...
macb_remove+0x60/0x168 [macb]
platform_remove+0x5c/0x80
...
The warning happens because the PHY is being exited while the netdev
is still registered. The correct order is to unregister the netdev
before shutting down the PHY and cleaning up the MDIO bus.
Fix this by moving unregister_netdev() ahead of phy_exit() in
macb_remove().
References
Configurations
Configuration 1 (hide)
|
History
02 Dec 2025, 19:31
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/01b9128c5db1b470575d07b05b67ffa3cb02ebf1 - Patch | |
| References | () https://git.kernel.org/stable/c/775fe690fd4a3337ad2115de2adb41b227d4dae7 - Patch | |
| References | () https://git.kernel.org/stable/c/ff0d3bad32108b57265e5b48f15327549af771d3 - Patch |
Information
Published : 2025-09-16 13:15
Updated : 2025-12-02 19:31
NVD link : CVE-2025-39805
Mitre link : CVE-2025-39805
CVE.ORG link : CVE-2025-39805
JSON object : View
Products Affected
linux
- linux_kernel
CWE