ghsa-hx7p-6fcf-8gxf
Vulnerability from github
Published
2024-05-03 15:30
Modified
2024-06-03 18:53
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()

syzbot is hitting percpu_rwsem_assert_held(&cpu_hotplug_lock) warning at cpuset_attach() [1], for commit 4f7e7236435ca0ab ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock") missed that cpuset_attach() is also called from cgroup_attach_task_all(). Add cpus_read_lock() like what cgroup_procs_write_start() does.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48671"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T15:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()\n\nsyzbot is hitting percpu_rwsem_assert_held(\u0026cpu_hotplug_lock) warning at\ncpuset_attach() [1], for commit 4f7e7236435ca0ab (\"cgroup: Fix\nthreadgroup_rwsem \u003c-\u003e cpus_read_lock() deadlock\") missed that\ncpuset_attach() is also called from cgroup_attach_task_all().\nAdd cpus_read_lock() like what cgroup_procs_write_start() does.",
  "id": "GHSA-hx7p-6fcf-8gxf",
  "modified": "2024-06-03T18:53:45Z",
  "published": "2024-05-03T15:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48671"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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