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CVE-2025-39957

Full vulnerability record from the local CVENow database.

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.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-09 10:15:37.133000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON 
{
  "id": "CVE-2025-39957",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-09T10:15:37.133",
  "lastModified": "2026-10-19T21:10:00.160",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: increase scan_ies_len for S1G\n\nCurrently the S1G capability element is not taken into account\nfor the scan_ies_len, which leads to a buffer length validation\nfailure in ieee80211_prep_hw_scan() and subsequent WARN in\n__ieee80211_start_scan(). This prevents hw scanning from functioning.\nTo fix ensure we accommodate for the S1G capability length."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: mac80211: aumentar scan_ies_len para S1G\n\nActualmente, el elemento de capacidad S1G no se tiene en cuenta para el scan_ies_len, lo que lleva a un fallo de validación de longitud de búfer en ieee80211_prep_hw_scan() y a un WARN posterior en __ieee80211_start_scan(). Esto impide que el escaneo de hardware funcione. Para corregirlo, nos aseguramos de acomodar la longitud de capacidad S1G."
    }
  ],
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      "affectedData": [
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          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
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          "privilegesRequired": "LOW",
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      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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}