Medium 5.5Published Sep 16, 2025

CVE-2025-39805net: macb: fix unregister_netdev call order in macb_remove()

Updated under an hour ago (Oct 27, 2026, 11:23 PM ET)

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Exploited in the last 30 days

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().

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8b73fa3ae02b2401960de41b0454c0321377b203 before 7351782f2fc8ac31ced52e3d4e6fa120f819a7ab; 8b73fa3ae02b2401960de41b0454c0321377b203 builds before 2b9719ccad38dffad7dbdd2f39896f723f9b9011; from 8b73fa3ae02b2401960de41b0454c0321377b203 before ff0d3bad32108b57265e5b48f15327549af771d3; from 8b73fa3ae02b2401960de41b0454c0321377b203 before 775fe690fd4a3337ad2115de2adb41b227d4dae7; 8b73fa3ae02b2401960de41b0454c0321377b203 builds before 01b9128c5db1b470575d07b05b67ffa3cb02ebf1	CNA record
linux linux_kernel linux:linux_kernel	from 5.18 before 6.12.45; from 6.13 before 6.16.5; 6.17; 6.17; 6.17	NVD

References

References

https://git.kernel.org/stable/c/7351782f2fc8ac31ced52e3d4e6fa120f819a7ab
https://git.kernel.org/stable/c/2b9719ccad38dffad7dbdd2f39896f723f9b9011
https://git.kernel.org/stable/c/ff0d3bad32108b57265e5b48f15327549af771d3	patch
https://git.kernel.org/stable/c/775fe690fd4a3337ad2115de2adb41b227d4dae7	patch
https://git.kernel.org/stable/c/01b9128c5db1b470575d07b05b67ffa3cb02ebf1	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.