5.5

CVE-2025-39805: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-39805DEBIAN-CVE-2025-39805
Published 16-09-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-39805 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 27 · Related 25
DLA-4436-1DSA-6008-1OPENSUSE-SU-2025:20172-1SUSE-SU-2025:4393-1SUSE-SU-2025:4422-1SUSE-SU-2025:4505-1

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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().

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu122 products
  • linux< 6.8.0-106.106
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 8b73fa3ae02b2401960de41b0454c0321377b203, < 7351782f2fc8ac31ced52e3d4e6fa120f819a7ab | ≥ 8b73fa3ae02b2401960de41b0454c0321377b203, < 2b9719ccad38dffad7dbdd2f39896f723f9b9011 | ≥ 8b73fa3ae02b2401960de41b0454c0321377b203, < ff0d3bad32108b57265e5b48f15327549af771d3 | ≥ 8b73fa3ae02b2401960de41b0454c0321377b203, < 775fe690fd4a3337ad2115de2adb41b227d4dae7 | ≥ 8b73fa3ae02b2401960de41b0454c0321377b203, < 01b9128c5db1b470575d07b05b67ffa3cb02ebf1 | 5.18
  • linux_kernel≥ 5.18, < 6.12.45 | ≥ 6.13, < 6.16.5 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3
Debian1 product
  • linux< 6.1.159-1 | < 6.12.48-1 | < 6.16.5-1

3 vendors · 125 products

References

20 links
Show all 20 references