ghsa-9338-v6x4-3wv5
Vulnerability from github
Published
2024-06-24 15:31
Modified
2024-06-27 12:30
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:

um: Add winch to winch_handlers before registering winch IRQ

Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list.

If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup().

Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-39292"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-24T14:15:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\num: Add winch to winch_handlers before registering winch IRQ\n\nRegistering a winch IRQ is racy, an interrupt may occur before the winch is\nadded to the winch_handlers list.\n\nIf that happens, register_winch_irq() adds to that list a winch that is\nscheduled to be (or has already been) freed, causing a panic later in\nwinch_cleanup().\n\nAvoid the race by adding the winch to the winch_handlers list before\nregistering the IRQ, and rolling back if um_request_irq() fails.",
  "id": "GHSA-9338-v6x4-3wv5",
  "modified": "2024-06-27T12:30:48Z",
  "published": "2024-06-24T15:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39292"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "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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