fkie_cve-2022-3176
Vulnerability from fkie_nvd
Published
2022-09-16 14:15
Modified
2024-11-21 07:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659
References
cve-coordination@google.comhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659Mailing List, Patch, Vendor Advisory
cve-coordination@google.comhttps://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659Patch, Vendor Advisory
cve-coordination@google.comhttps://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
cve-coordination@google.comhttps://security.netapp.com/advisory/ntap-20230216-0003/Third Party Advisory
cve-coordination@google.comhttps://www.debian.org/security/2022/dsa-5257Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230216-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5257Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 10.0
debian debian_linux 11.0


To clipboard 

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              "vulnerable": true
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            {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn\u0027t handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659"
    },
    {
      "lang": "es",
      "value": "Se presenta un uso de memoria previamente liberada en la funci\u00f3n io_uring en el kernel de Linux. Signalfd_poll() y binder_poll() usan una cola de espera cuyo tiempo de vida es la tarea actual. Enviar\u00e1 una notificaci\u00f3n POLLFREE a todos los esperadores antes de que la cola sea liberada. Desafortunadamente, el sondeo io_uring no maneja POLLFREE. Esto permite que sea producido un uso de memoria previamente liberada si un signalfd o binder fd es sondeado con io_uring poll, y la cola de espera es liberada. Recomendamos actualizar el commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659"
    }
  ],
  "id": "CVE-2022-3176",
  "lastModified": "2024-11-21T07:18:58.970",
  "metrics": {
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "baseScore": 7.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "scope": "UNCHANGED",
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  "published": "2022-09-16T14:15:09.713",
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  "sourceIdentifier": "cve-coordination@google.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary"
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          "value": "CWE-416"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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