{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26627",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26627"
  ],
  "published": "2024-03-06T06:46:18Z",
  "summary": "scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Move scsi_host_busy() out of host lock for waking up EH handler\n\nInside scsi_eh_wakeup(), scsi_host_busy() is called & checked with host\nlock every time for deciding if error handler kthread needs to be waken up.\n\nThis can be too heavy in case of recovery, such as:\n\n - N hardware queues\n\n - queue depth is M for each hardware queue\n\n - each scsi_host_busy() iterates over (N * M) tag/requests\n\nIf recovery is triggered in case that all requests are in-flight, each\nscsi_eh_wakeup() is strictly serialized, when scsi_eh_wakeup() is called\nfor the last in-flight request, scsi_host_busy() has been run for (N * M -\n1) times, and request has been iterated for (N*M - 1) * (N * M) times.\n\nIf both N and M are big enough, hard lockup can be triggered on acquiring\nhost lock, and it is observed on mpi3mr(128 hw queues, queue depth 8169).\n\nFix the issue by calling scsi_host_busy() outside the host lock. We don't\nneed the host lock for getting busy count because host the lock never\ncovers that.\n\n[mkp: Drop unnecessary 'busy' variables pointed out by Bart]",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
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        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4",
        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
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            "binary_version": "1:6.1.21-1+rpt1"
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            "binary_version": "1:6.1.21-1+rpt1"
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          },
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26627"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}