net: phy: Don't register LEDs for genphy (Linux Linux)

CVE-2025-38537
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.15 % · percentile 5 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: net: phy: Don't register LEDs for genphy If a PHY has no driver, the genphy driver is probed/removed directly in phy_attach/detach. If the PHY's ofnode has an "leds" subnode, then the LEDs will be (un)registered when probing/removing the genphy driver. This could occur if the leds are for a non-generic driver that isn't loaded for whatever reason. Synchronously removing the PHY device in phy_detach leads to the following deadlock: rtnl_lock() ndo_close() ... phy_detach() phy_remove() phy_leds_unregister() led_classdev_unregister() led_trigger_set() netdev_trigger_deactivate() unregister_netdevice_notifier() rtnl_lock() There is a corresponding deadlock on the open/register side of things (and that one is reported by lockdep), but it requires a race while this one is deterministic. Generic PHYs do not support LEDs anyway, so don't bother registering them.

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 01e5b728e9e43ae444e0369695a5f72209906464 < ec158d05eaa91b2809cab65f8068290e3c05ebdd ; affected 01e5b728e9e43ae444e0369695a5f72209906464 < fd6493533af9e5d73d0d42ff2a8ded978a701dc6 ; affected 01e5b728e9e43ae444e0369695a5f72209906464 < 75e1b2079ef0653a2f7aa69be515d86b7faf1908 ; affected 01e5b728e9e43ae444e0369695a5f72209906464 < f0f2b992d8185a0366be951685e08643aae17d6d
Linux · Linuxaffected 6.4 ; unaffected 0 < 6.4 ; unaffected 6.6.100 ≤ 6.6.* ; unaffected 6.12.40 ≤ 6.12.* ; unaffected 6.15.8 ≤ 6.15.* ; unaffected 6.16 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD