{
  "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-2026-93202",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93202",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:12:23.071Z",
    "updatedAt": "2026-10-21T12:52:19.560Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "i3c: master: Fix recursive locking during device registration",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix recursive locking during device registration\n\ni3c_master_register_new_i3c_devs() registers newly discovered devices\nwhile holding i3c_bus_normaluse_lock(), a down_read().  device_register()\ncan immediately probe the device, and probe callbacks typically invoke\nI3C helpers that take i3c_bus_normaluse_lock() again, leading to a\nrecursive acquisition of the same rwsem.  rwsems do not support recursive\nread locking and can deadlock when a writer is waiting.  See the\n\"Recursive read locks\" section of Documentation/locking/lockdep-design.rst.\n\nFor example, with Intel LPSS I3C, LOCKDEP generates a WARNING like:\n  # echo intel-lpss-i3c.0 > /sys/bus/platform/drivers/mipi-i3c-hci/unbind\n  # echo intel-lpss-i3c.0 > /sys/bus/platform/drivers/mipi-i3c-hci/bind\n  WARNING: possible recursive locking detected\n  kworker/5:1/94 is trying to acquire lock:\n  ffff88811c810d78 (&i3cbus->lock){++++}-{4:4}, at: i3c_device_match_id+0x45/0x370\n  but task is already holding lock:\n  ffff88811c810d78 (&i3cbus->lock){++++}-{4:4}, at: i3c_master_reg_work_fn+0x21/0x5f0\n\nFix this by separating device creation from device registration.\nPopulate desc->dev under the maintenance lock, collect the devices that\nstill need registration into a local list, then release the lock before\ncalling device_register().  Finally retake the lock and clean up any\ndevices that failed to register.\n\nUse the maintenance lock rather than the normal-use lock while adding\ndevice objects.  A write-side maintenance lock prevents readers from\nobserving a partially initialized desc->dev during initial device\npopulation, or desc->dev disappearing if registration fails.\n\nThe local list requires a list node, so add a list node member to struct\ni3c_device.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6640f778aa3d430e67171f8d17fe4a35bb44b578"
            },
            {
              "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0200dc55e68cc0177b6e60919de415cc96fdd4e1"
            },
            {
              "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b25232f66e8cd653d0c6bfdbe534e62a2f9d6a1b"
            },
            {
              "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9dc73c51ed3ee965c3ddb0ac31cf5c3eea68fa0c"
            },
            {
              "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "456f832e5fc26fbfd3b8200fd4553eee520cc377"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.0"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.114",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}