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CVE-2025-39853— i40e: Fix potential invalid access when MAC list is empty

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，该漏洞源于使用list_first_entry访问空MAC列表，可能导致无效内存访问。

AI Predicted 5.3 Difficulty: Easy EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e3219ce6a775468368fb270fae3eb82a6787b436< 971feafe157afac443027acdc235badc6838560b affected
e3219ce6a775468368fb270fae3eb82a6787b436< 3c6fb929afa313d9d11f780451d113f73922fe5d affected
e3219ce6a775468368fb270fae3eb82a6787b436< 1eadabcf5623f1237a539b16586b4ed8ac8dffcd affected
e3219ce6a775468368fb270fae3eb82a6787b436< e2a5e74879f9b494bbd66fa93f355feacde450c7 affected
e3219ce6a775468368fb270fae3eb82a6787b436< fb216d980fae6561c7c70af8ef826faf059c6515 affected
e3219ce6a775468368fb270fae3eb82a6787b436< 66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf affected
e3219ce6a775468368fb270fae3eb82a6787b436< 9c21fc4cebd44dd21016c61261a683af390343f8 affected
e3219ce6a775468368fb270fae3eb82a6787b436< a556f06338e1d5a85af0e32ecb46e365547f92b9 affected
… +10 more rows
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I. Basic Information for CVE-2025-39853

Vulnerability Information
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Vulnerability Title
i40e: Fix potential invalid access when MAC list is empty
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix potential invalid access when MAC list is empty list_first_entry() never returns NULL - if the list is empty, it still returns a pointer to an invalid object, leading to potential invalid memory access when dereferenced. Fix this by using list_first_entry_or_null instead of list_first_entry.
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，该漏洞源于使用list_first_entry访问空MAC列表，可能导致无效内存访问。
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 e3219ce6a775468368fb270fae3eb82a6787b436 ~ 971feafe157afac443027acdc235badc6838560b -
Linux Linux 4.6 -

II. Public POCs for CVE-2025-39853

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III. Intelligence Information for CVE-2025-39853

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Same Patch Batch · Linux · 2025-09-19 · 30 CVEs total

CVE-2025-39841 9.8 CRITICAL scsi: lpfc: Fix buffer free/clear order in deferred receive path
CVE-2025-39848 8.8 HIGH ax25: properly unshare skbs in ax25_kiss_rcv()
CVE-2025-39864 8.8 HIGH wifi: cfg80211: fix use-after-free in cmp_bss()
CVE-2025-39849 8.8 HIGH wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()
CVE-2025-39862 8.8 HIGH wifi: mt76: mt7915: fix list corruption after hardware restart
CVE-2025-39839 8.8 HIGH batman-adv: fix OOB read/write in network-coding decode
CVE-2025-39860 8.0 HIGH Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
CVE-2025-39837 7.8 HIGH platform/x86: asus-wmi: Fix racy registrations
CVE-2025-39866 7.8 HIGH fs: writeback: fix use-after-free in __mark_inode_dirty()
CVE-2025-39854 7.8 HIGH ice: fix NULL access of tx->in_use in ice_ll_ts_intr
CVE-2025-39863 7.8 HIGH wifi: brcmfmac: fix use-after-free when rescheduling brcmf_btcoex_info work
CVE-2025-39857 7.5 HIGH net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()
CVE-2025-39851 7.5 HIGH vxlan: Fix NPD when refreshing an FDB entry with a nexthop object
CVE-2025-39840 7.1 HIGH audit: fix out-of-bounds read in audit_compare_dname_path()
CVE-2025-39842 ocfs2: prevent release journal inode after journal shutdown
CVE-2025-39838 cifs: prevent NULL pointer dereference in UTF16 conversion
CVE-2025-39844 mm: move page table sync declarations to linux/pgtable.h
CVE-2025-39852 net/tcp: Fix socket memory leak in TCP-AO failure handling for IPv6
CVE-2025-39843 mm: slub: avoid wake up kswapd in set_track_prepare
CVE-2025-39845 x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings()

Showing top 20 of 30 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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