{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "256a21743d911f94ce92fe28f793cd586f3860b2"
            },
            {
              "fixed": "251db58324ea4792c3f9f692ab09be148e051969"
            },
            {
              "fixed": "8bed7f4fa710914b7f05fd59998316bfb4d43385"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80954.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Fix unlocked dereference of dev-\u003edesc in i3c_device_get_supported_xfer_mode()\n\ni3c_device_get_supported_xfer_mode() uses dev-\u003edesc to obtain the\nmaster controller.  However, dev-\u003edesc must not be dereferenced unless\nbus-\u003elock is held, and this function does not take that lock.\n\nThe function only needs access to the master controller associated with\nthe device's bus.  Use dev-\u003ebus instead, which is always valid for the\nlifetime of the device and does not require dereferencing dev-\u003edesc.",
  "id": "CVE-2026-80954",
  "modified": "2026-09-15T03:31:01.314491050Z",
  "published": "2026-09-11T19:42:23.169Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80954.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80954"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "i3c: Fix unlocked dereference of dev-\u003edesc in i3c_device_get_supported_xfer_mode()"
}