ghsa-63jf-69f4-24f6
Vulnerability from github
Published
2022-09-17 00:00
Modified
2022-09-18 00:00
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-3176"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-09-16T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "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",
  "id": "GHSA-63jf-69f4-24f6",
  "modified": "2022-09-18T00:00:32Z",
  "published": "2022-09-17T00:00:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3176"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y\u0026id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659"
    },
    {
      "type": "WEB",
      "url": "https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230216-0003"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5257"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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