ghsa-2j45-xr49-x8qc
Vulnerability from github
Published
2024-07-30 09:32
Modified
2025-11-04 00:31
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:

riscv: kexec: Avoid deadlock in kexec crash path

If the kexec crash code is called in the interrupt context, the machine_kexec_mask_interrupts() function will trigger a deadlock while trying to acquire the irqdesc spinlock and then deactivate irqchip in irq_set_irqchip_state() function.

Unlike arm64, riscv only requires irq_eoi handler to complete EOI and keeping irq_set_irqchip_state() will only leave this possible deadlock without any use. So we simply remove it.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-42140"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-30T08:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: kexec: Avoid deadlock in kexec crash path\n\nIf the kexec crash code is called in the interrupt context, the\nmachine_kexec_mask_interrupts() function will trigger a deadlock while\ntrying to acquire the irqdesc spinlock and then deactivate irqchip in\nirq_set_irqchip_state() function.\n\nUnlike arm64, riscv only requires irq_eoi handler to complete EOI and\nkeeping irq_set_irqchip_state() will only leave this possible deadlock\nwithout any use. So we simply remove it.",
  "id": "GHSA-2j45-xr49-x8qc",
  "modified": "2025-11-04T00:31:07Z",
  "published": "2024-07-30T09:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42140"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/484dd545271d02d1571e1c6b62ea7df9dbe5e692"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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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