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CVE-2025-39957— wifi: mac80211: increase scan_ies_len for S1G

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，该漏洞源于未考虑S1G能力元素的scan_ies_len长度，可能导致缓冲区长度验证失败。

CVSS 7.1 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 0333a81bc83431d7f90391d38aa09e856c5e5b25< 93e063f15e17acb8cd6ac90c8f0802c2624e1a74 affected
0333a81bc83431d7f90391d38aa09e856c5e5b25< 32adb020b0c32939da1322dcc87fc0ae2bc935d1 affected
0333a81bc83431d7f90391d38aa09e856c5e5b25< 0dbad5f5549e54ac269cc04ce89f212892a98cab affected
0333a81bc83431d7f90391d38aa09e856c5e5b25< 7e2f3213e85eba00acb4cfe6d71647892d63c3a1 affected
6.4 affected
< 6.4 unaffected
6.6.108≤ 6.6.* unaffected
6.12.49≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-39957

Vulnerability Information
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Vulnerability Title
wifi: mac80211: increase scan_ies_len for S1G
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: increase scan_ies_len for S1G Currently the S1G capability element is not taken into account for the scan_ies_len, which leads to a buffer length validation failure in ieee80211_prep_hw_scan() and subsequent WARN in __ieee80211_start_scan(). This prevents hw scanning from functioning. To fix ensure we accommodate for the S1G capability length.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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，该漏洞源于未考虑S1G能力元素的scan_ies_len长度，可能导致缓冲区长度验证失败。
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 0333a81bc83431d7f90391d38aa09e856c5e5b25 ~ 93e063f15e17acb8cd6ac90c8f0802c2624e1a74 -
Linux Linux 6.4 -

II. Public POCs for CVE-2025-39957

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III. Intelligence Information for CVE-2025-39957

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Same Patch Batch · Linux · 2025-10-09 · 10 CVEs total

CVE-2025-39961 8.8 HIGH iommu/amd/pgtbl: Fix possible race while increase page table level
CVE-2025-39963 7.8 HIGH io_uring: fix incorrect io_kiocb reference in io_link_skb
CVE-2025-39956 7.8 HIGH igc: don't fail igc_probe() on LED setup error
CVE-2025-39962 7.5 HIGH rxrpc: Fix untrusted unsigned subtract
CVE-2025-39960 7.3 HIGH gpiolib: acpi: initialize acpi_gpio_info struct
CVE-2025-39959 ASoC: amd: acp: Fix incorrect retrival of acp_chip_info
CVE-2025-39958 iommu/s390: Make attach succeed when the device was surprise removed
CVE-2025-39955 tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().
CVE-2025-39954 clk: sunxi-ng: mp: Fix dual-divider clock rate readback

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39957

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