CVE-2025-39876

net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()

MEDIUM

5.5

CVSS Score

Published: September 23, 2025 at 06:00 AM UTC

Updated: October 19, 2026 at 09:10 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() The function of_phy_find_device may return NULL, so we need to take care before dereferencing phy_dev.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

4.19.153 ≤ v < 4.205.11 ≤ v < 5.15.1945.16 ≤ v < 6.1.1535.4.73 ≤ v < 5.4.3005.8.17 ≤ v < 5.95.9.2 ≤ v < 5.10.2456.13 ≤ v < 6.16.86.2 ≤ v < 6.6.1076.7 ≤ v < 6.12.484.19.153 5.10 5.4.73 5.8.17 5.9.2 6.17 6.17 rc1 6.17 rc2 6.17 rc3 6.17 rc4 6.17 rc564a632da538a6827fad0ea461925cedb9899ebe28a6ab151443cd71e2aa5e8b7014e3453dbd519359e70485b40c8306298adea8bdc867ca27f88955ac068e505f229ca5f778f825f1401817ce818e917ce88b5f42868ef4964c497d4dfcd25e88fd60c5b

Vendor states this is fixed in 03e79de4608bdd48ad6eec272e196124cefaf798 (fixed)

Vendor states this is fixed in 20a3433d31c2d2bf70ab0abec75f3136b42ae66c (fixed)

Vendor states this is fixed in 4fe53aaa4271a72fe5fe3e88a45ce01646b68dc5 (fixed)

Vendor states this is fixed in 5f1bb554a131e59b28482abad21f691390651752 (fixed)

Vendor states this is fixed in 8c60d12bba14dc655d2d948b1dbf390b3ae39cb8 (fixed)

Vendor states this is fixed in 93a699d6e92cfdfa9eb9dbb8c653b5322542ca4f (fixed)

Vendor states this is fixed in eb148d85e126c47d65be34f2a465d69432ca5541 (fixed)

Vendor states this is fixed in fe78891f296ac05bf4e5295c9829ef822f3c32e7 (fixed)

Affected range stops below 4.20, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.10 (unaffected)

Vendor states this is fixed in 5.10.245 (unaffected)

Vendor states this is fixed in 5.15.194 (unaffected)