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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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macb_remove函数中未正确调用unregister_netdev和phy_exit的顺序，可能导致内核警告。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 2 AI

T1562 T1055 · Process Injection

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 8b73fa3ae02b2401960de41b0454c0321377b203< 7351782f2fc8ac31ced52e3d4e6fa120f819a7ab affected
8b73fa3ae02b2401960de41b0454c0321377b203< 2b9719ccad38dffad7dbdd2f39896f723f9b9011 affected
8b73fa3ae02b2401960de41b0454c0321377b203< ff0d3bad32108b57265e5b48f15327549af771d3 affected
8b73fa3ae02b2401960de41b0454c0321377b203< 775fe690fd4a3337ad2115de2adb41b227d4dae7 affected
8b73fa3ae02b2401960de41b0454c0321377b203< 01b9128c5db1b470575d07b05b67ffa3cb02ebf1 affected
5.18 affected
< 5.18 unaffected
6.1.159≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-39805

Vulnerability Information
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Vulnerability Title
net: macb: fix unregister_netdev call order in macb_remove()
Source: CVE Program / CVE List V5
Vulnerability Description
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().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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macb_remove函数中未正确调用unregister_netdev和phy_exit的顺序，可能导致内核警告。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8b73fa3ae02b2401960de41b0454c0321377b203 ~ 7351782f2fc8ac31ced52e3d4e6fa120f819a7ab -
Linux Linux 5.18 -

II. Public POCs for CVE-2025-39805

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III. Intelligence Information for CVE-2025-39805

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50350 9.8 CRITICAL scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2025-39806 8.8 HIGH HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()
CVE-2023-53315 8.8 HIGH wifi: ath11k: Fix SKB corruption in REO destination ring
CVE-2023-53305 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free
CVE-2025-39827 8.8 HIGH net: rose: include node references in rose_neigh refcount
CVE-2025-39826 8.8 HIGH net: rose: convert 'use' field to refcount_t
CVE-2023-53322 8.8 HIGH scsi: qla2xxx: Wait for io return on terminate rport
CVE-2023-53297 8.8 HIGH Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
CVE-2025-39809 8.4 HIGH HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length
CVE-2023-53333 8.2 HIGH netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one
CVE-2023-53314 7.8 HIGH fbdev/ep93xx-fb: Do not assign to struct fb_info.dev
CVE-2025-39815 7.8 HIGH RISC-V: KVM: fix stack overrun when loading vlenb
CVE-2023-53286 7.8 HIGH RDMA/mlx5: Return the firmware result upon destroying QP/RQ
CVE-2025-39818 7.8 HIGH HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save
CVE-2023-53311 7.8 HIGH nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput
CVE-2022-50341 7.8 HIGH cifs: fix oops during encryption
CVE-2025-39825 7.8 HIGH smb: client: fix race with concurrent opens in rename(2)
CVE-2023-53263 7.8 HIGH drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create
CVE-2025-39810 7.8 HIGH bnxt_en: Fix memory corruption when FW resources change during ifdown
CVE-2023-53331 7.8 HIGH pstore/ram: Check start of empty przs during init

Showing top 20 of 115 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39805

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