FKIE_CVE-2025-21909

Vulnerability from fkie_nvd - Published: 2025-04-01 16:15 - Updated: 2025-11-03 20:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject cooked mode if it is set along with other flags It is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE flags simultaneously on the same monitor interface from the userspace. This causes a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit set because the monitor interface is in the cooked state and it takes precedence over all other states. When the interface is then being deleted the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing that bit. Fix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with other flags. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: nl80211: reject cooked mode if it is set along with other flags\n\nIt is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE\nflags simultaneously on the same monitor interface from the userspace. This\ncauses a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit\nset because the monitor interface is in the cooked state and it takes\nprecedence over all other states. When the interface is then being deleted\nthe kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing\nthat bit.\n\nFix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with\nother flags.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: nl80211: rechaza el modo cocinado si se configura junto con otras banderas. Es posible configurar simult\u00e1neamente las banderas MONITOR_FLAG_COOK_FRAMES y MONITOR_FLAG_ACTIVE en la misma interfaz de monitor desde el espacio de usuario. Esto provoca que se cree una subinterfaz sin el bit IEEE80211_SDATA_IN_DRIVER configurado, ya que la interfaz de monitor est\u00e1 en estado cocinado y tiene prioridad sobre todos los dem\u00e1s estados. Al eliminar la interfaz, el kernel llama a WARN_ONCE() desde check_sdata_in_driver() debido a la falta de ese bit. Solucione esto rechazando MONITOR_FLAG_COOK_FRAMES si se configura junto con otras banderas. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller."
    }
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  "id": "CVE-2025-21909",
  "lastModified": "2025-11-03T20:17:26.380",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2025-04-01T16:15:21.430",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-362"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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