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CVE-2025-39971— i40e: fix idx validation in config queues msg

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，该漏洞源于未正确验证idx范围，可能导致越界访问。

CVSS 8.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< a6ff2af78343eceb0f77ab1a2fe802183bc21648 affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< f5f91d164af22e7147130ef8bebbdb28d8ecc6e2 affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< 1fa0aadade34481c567cdf4a897c0d4e4d548bd1 affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< 8b9c7719b0987b1c6c5fc910599f3618a558dbde affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< 2cc26dac0518d2fa9b67ec813ee60e183480f98a affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< bfcc1dff429d4b99ba03e40ddacc68ea4be2b32b affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< 5c1f96123113e0bdc6d8dc2b0830184c93da9f65 affected
c27eac48160de72dee33d42b5a33cc7b8a2eb1f5< f1ad24c5abe1eaef69158bac1405a74b3c365115 affected
… +10 more rows
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I. Basic Information for CVE-2025-39971

Vulnerability Information
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Vulnerability Title
i40e: fix idx validation in config queues msg
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i40e: fix idx validation in config queues msg Ensure idx is within range of active/initialized TCs when iterating over vf->ch[idx] in i40e_vc_config_queues_msg().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于未正确验证idx范围，可能导致越界访问。
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 c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 ~ a6ff2af78343eceb0f77ab1a2fe802183bc21648 -
Linux Linux 4.17 -

II. Public POCs for CVE-2025-39971

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III. Intelligence Information for CVE-2025-39971

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Patches & Fixes for CVE-2025-39971 (1)

Same Patch Batch · Linux · 2025-10-15 · 34 CVEs total

CVE-2025-39975 9.8 CRITICAL smb: client: fix wrong index reference in smb2_compound_op()
CVE-2025-39973 8.8 HIGH i40e: add validation for ring_len param
CVE-2025-39969 8.8 HIGH i40e: fix validation of VF state in get resources
CVE-2025-39970 8.8 HIGH i40e: fix input validation logic for action_meta
CVE-2025-39972 8.8 HIGH i40e: fix idx validation in i40e_validate_queue_map
CVE-2025-39982 8.8 HIGH Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync
CVE-2025-40000 8.8 HIGH wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()
CVE-2025-39983 8.8 HIGH Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue
CVE-2025-39987 7.8 HIGH can: hi311x: populate ndo_change_mtu() to prevent buffer overflow
CVE-2025-39976 7.8 HIGH futex: Use correct exit on failure from futex_hash_allocate_default()
CVE-2025-39977 7.8 HIGH futex: Prevent use-after-free during requeue-PI
CVE-2025-39978 7.8 HIGH octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()
CVE-2025-39979 7.8 HIGH net/mlx5: fs, fix UAF in flow counter release
CVE-2025-39981 7.8 HIGH Bluetooth: MGMT: Fix possible UAFs
CVE-2025-39985 7.8 HIGH can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow
CVE-2025-39986 7.8 HIGH can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow
CVE-2025-39988 7.8 HIGH can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow
CVE-2025-39990 7.8 HIGH bpf: Check the helper function is valid in get_helper_proto
CVE-2025-39993 7.8 HIGH media: rc: fix races with imon_disconnect()
CVE-2025-39967 7.8 HIGH fbcon: fix integer overflow in fbcon_do_set_font

Showing top 20 of 34 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39971

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