GHSA-MVJQ-GQ62-VXRR

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-22 15:31
VLAI?
Details

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

tracing: Fix potential deadlock in cpu hotplug with osnoise

The following sequence may leads deadlock in cpu hotplug:

task1        task2        task3
-----        -----        -----

mutex_lock(&interface_lock)

        [CPU GOING OFFLINE]

        cpus_write_lock();
        osnoise_cpu_die();
          kthread_stop(task3);
            wait_for_completion();

                  osnoise_sleep();
                    mutex_lock(&interface_lock);

cpus_read_lock();

[DEAD LOCK]

Fix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31480"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix potential deadlock in cpu hotplug with osnoise\n\nThe following sequence may leads deadlock in cpu hotplug:\n\n    task1        task2        task3\n    -----        -----        -----\n\n mutex_lock(\u0026interface_lock)\n\n            [CPU GOING OFFLINE]\n\n            cpus_write_lock();\n            osnoise_cpu_die();\n              kthread_stop(task3);\n                wait_for_completion();\n\n                      osnoise_sleep();\n                        mutex_lock(\u0026interface_lock);\n\n cpus_read_lock();\n\n [DEAD LOCK]\n\nFix by swap the order of cpus_read_lock() and mutex_lock(\u0026interface_lock).",
  "id": "GHSA-mvjq-gq62-vxrr",
  "modified": "2026-04-22T15:31:42Z",
  "published": "2026-04-22T15:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31480"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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