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CVE-2025-39876— net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()

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，该漏洞源于未检查of_phy_find_device返回值，可能导致空指针取消引用。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 25

VendorProduct Version RangeStatus
Linux Linux 9e70485b40c8306298adea8bdc867ca27f88955a< 8c60d12bba14dc655d2d948b1dbf390b3ae39cb8 affected
64a632da538a6827fad0ea461925cedb9899ebe2< 20a3433d31c2d2bf70ab0abec75f3136b42ae66c affected
64a632da538a6827fad0ea461925cedb9899ebe2< 93a699d6e92cfdfa9eb9dbb8c653b5322542ca4f affected
64a632da538a6827fad0ea461925cedb9899ebe2< 5f1bb554a131e59b28482abad21f691390651752 affected
64a632da538a6827fad0ea461925cedb9899ebe2< fe78891f296ac05bf4e5295c9829ef822f3c32e7 affected
64a632da538a6827fad0ea461925cedb9899ebe2< 4fe53aaa4271a72fe5fe3e88a45ce01646b68dc5 affected
64a632da538a6827fad0ea461925cedb9899ebe2< eb148d85e126c47d65be34f2a465d69432ca5541 affected
64a632da538a6827fad0ea461925cedb9899ebe2< 03e79de4608bdd48ad6eec272e196124cefaf798 affected
… +17 more rows
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I. Basic Information for CVE-2025-39876

Vulnerability Information
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Vulnerability Title
net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
Source: CVE Program / CVE List V5
Vulnerability 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.
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，该漏洞源于未检查of_phy_find_device返回值，可能导致空指针取消引用。
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 9e70485b40c8306298adea8bdc867ca27f88955a ~ 8c60d12bba14dc655d2d948b1dbf390b3ae39cb8 -
Linux Linux 5.10 -

II. Public POCs for CVE-2025-39876

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III. Intelligence Information for CVE-2025-39876

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Patches & Fixes for CVE-2025-39876 (3)

Same Patch Batch · Linux · 2025-09-23 · 21 CVEs total

CVE-2025-39880 9.8 CRITICAL libceph: fix invalid accesses to ceph_connection_v1_info
CVE-2025-39869 8.4 HIGH dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
CVE-2025-39882 8.4 HIGH drm/mediatek: fix potential OF node use-after-free
CVE-2025-39888 7.8 HIGH fuse: Block access to folio overlimit
CVE-2025-39872 7.8 HIGH hsr: hold rcu and dev lock for hsr_get_port_ndev
CVE-2025-39873 7.8 HIGH can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB
CVE-2025-39868 7.8 HIGH erofs: fix runtime warning on truncate_folio_batch_exceptionals()
CVE-2025-39881 7.8 HIGH kernfs: Fix UAF in polling when open file is released
CVE-2025-39878 ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error
CVE-2025-39887 tracing/osnoise: Fix null-ptr-deref in bitmap_parselist()
CVE-2025-39885 ocfs2: fix recursive semaphore deadlock in fiemap call
CVE-2025-39886 bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
CVE-2025-39883 mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
CVE-2025-39884 btrfs: fix subvolume deletion lockup caused by inodes xarray race
CVE-2025-39879 ceph: always call ceph_shift_unused_folios_left()
CVE-2025-39877 mm/damon/sysfs: fix use-after-free in state_show()
CVE-2025-39874 macsec: sync features on RTM_NEWLINK
CVE-2025-39875 igb: Fix NULL pointer dereference in ethtool loopback test
CVE-2025-39871 dmaengine: idxd: Remove improper idxd_free
CVE-2025-39870 dmaengine: idxd: Fix double free in idxd_setup_wqs()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39876

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