cbcvebase.
CVE-2025-38537
published 2025-08-16

CVE-2025-38537: 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…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.2th percentile
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.

Affected

24 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.16.3-1 (forky)linux 6.16.3-1 (forky)
linuxlinux
linuxlinux>= 01e5b728e9e43ae444e0369695a5f72209906464 < ec158d05eaa91b2809cab65f8068290e3c05ebddec158d05eaa91b2809cab65f8068290e3c05ebdd
linuxlinux>= 01e5b728e9e43ae444e0369695a5f72209906464 < fd6493533af9e5d73d0d42ff2a8ded978a701dc6fd6493533af9e5d73d0d42ff2a8ded978a701dc6
linuxlinux>= 01e5b728e9e43ae444e0369695a5f72209906464 < 75e1b2079ef0653a2f7aa69be515d86b7faf190875e1b2079ef0653a2f7aa69be515d86b7faf1908
linuxlinux>= 01e5b728e9e43ae444e0369695a5f72209906464 < f0f2b992d8185a0366be951685e08643aae17d6df0f2b992d8185a0366be951685e08643aae17d6d
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.12.41-16.12.41-1
linuxlinux_kernel>= 0 < 6.16.3-16.16.3-1
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 6.13 < 6.15.86.15.8
linuxlinux_kernel>= 6.4 < 6.6.1006.6.100
linuxlinux_kernel>= 6.7 < 6.12.406.12.40
msrcazl3_kernel_6.6.96.2-1_on_azure_linux_3.0
msrcazl3_kernel_6.6.96.2-2_on_azure_linux_3.0
ubuntulinux-aws
ubuntulinux-aws-6.8
ubuntulinux-gkeop
ubuntulinux-nvidia
ubuntulinux-nvidia-6.8
ubuntulinux-oracle
ubuntulinux-oracle-6.8
ubuntulinux-raspi-realtime
ubuntulinux-realtime

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu3.2LOW
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