{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-35991",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-35991",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-20T09:47:56.401Z",
    "updatedAt": "2026-05-11T20:15:11.120Z",
    "importedAt": "2026-10-24T01:57:11.582Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "dmaengine: idxd: Convert spinlock to mutex to lock evl workqueue",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Convert spinlock to mutex to lock evl workqueue\n\ndrain_workqueue() cannot be called safely in a spinlocked context due to\npossible task rescheduling. In the multi-task scenario, calling\nqueue_work() while drain_workqueue() will lead to a Call Trace as\npushing a work on a draining workqueue is not permitted in spinlocked\ncontext.\n    Call Trace:\n    <TASK>\n    ? __warn+0x7d/0x140\n    ? __queue_work+0x2b2/0x440\n    ? report_bug+0x1f8/0x200\n    ? handle_bug+0x3c/0x70\n    ? exc_invalid_op+0x18/0x70\n    ? asm_exc_invalid_op+0x1a/0x20\n    ? __queue_work+0x2b2/0x440\n    queue_work_on+0x28/0x30\n    idxd_misc_thread+0x303/0x5a0 [idxd]\n    ? __schedule+0x369/0xb40\n    ? __pfx_irq_thread_fn+0x10/0x10\n    ? irq_thread+0xbc/0x1b0\n    irq_thread_fn+0x21/0x70\n    irq_thread+0x102/0x1b0\n    ? preempt_count_add+0x74/0xa0\n    ? __pfx_irq_thread_dtor+0x10/0x10\n    ? __pfx_irq_thread+0x10/0x10\n    kthread+0x103/0x140\n    ? __pfx_kthread+0x10/0x10\n    ret_from_fork+0x31/0x50\n    ? __pfx_kthread+0x10/0x10\n    ret_from_fork_asm+0x1b/0x30\n    </TASK>\n\nThe current implementation uses a spinlock to protect event log workqueue\nand will lead to the Call Trace due to potential task rescheduling.\n\nTo address the locking issue, convert the spinlock to mutex, allowing\nthe drain_workqueue() to be called in a safe mutex-locked context.\n\nThis change ensures proper synchronization when accessing the event log\nworkqueue, preventing potential Call Trace and improving the overall\nrobustness of the code.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c40bd7d9737bdcfb02d42765bc6c59b338151123",
              "status": "affected",
              "versionType": "git",
              "lessThan": "758071a35d9f3ffd84ff12169d081412a2f5f098"
            },
            {
              "version": "c40bd7d9737bdcfb02d42765bc6c59b338151123",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c9b732a9f73eadc638abdcf0a6d39bc7a0c1af5f"
            },
            {
              "version": "c40bd7d9737bdcfb02d42765bc6c59b338151123",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d5638de827cff0fce77007e426ec0ffdedf68a44"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.4"
            },
            {
              "version": "6.6.30",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.8.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.8.*"
            },
            {
              "version": "6.9",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}