{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0"
            },
            {
              "fixed": "334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e"
            },
            {
              "fixed": "109995153898454c7795c2c299fd0a0b57456a4b"
            },
            {
              "fixed": "c64daaaba08e490c8347ff60aacac4dd51249f91"
            },
            {
              "fixed": "ef72ff6650c4ebf2b444708d84df66db42f262d9"
            },
            {
              "fixed": "c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49"
            },
            {
              "fixed": "94fb9786d67a8f8b899e77381620f86bad94fdf7"
            },
            {
              "fixed": "4837be0f9ac2efe5e83b35a696b6242c473d280c"
            },
            {
              "fixed": "d2c743efd2d1ee64e94324664808f623dd865872"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "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-2026-80952.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix info leak and UAF in device unregister path\n\ni3c_master_unregister_i3c_devs() clears i3cdev-\u003edev-\u003edesc before\ncalling device_unregister().  During device_unregister(),\ndevice_del() emits a KOBJ_REMOVE uevent and unbinds the driver while\nthe device descriptor is still expected to be valid.  As a result,\ni3c_device_uevent() and a racing modalias_show() can observe a NULL\ndesc and fall back to an uninitialized stack struct i3c_device_info,\nleaking kernel stack contents in the generated modalias.  Driver\n.remove() callbacks may also encounter an unexpected NULL desc during\nunbind.\n\nKeep desc valid until device_unregister() has completed.  Since\ndevice_unregister() drops the device reference and may free the device,\ntake an extra reference with get_device() before unregistering.  Clear\ndesc afterwards and release the extra reference with put_device().\nThis preserves the release-time invariant that desc must be NULL while\navoiding both the information leak and a potential use-after-free from\nwriting desc after the device has been released.",
  "id": "CVE-2026-80952",
  "modified": "2026-09-15T03:30:59.704056669Z",
  "published": "2026-09-11T19:42:21.868Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/109995153898454c7795c2c299fd0a0b57456a4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4837be0f9ac2efe5e83b35a696b6242c473d280c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94fb9786d67a8f8b899e77381620f86bad94fdf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c64daaaba08e490c8347ff60aacac4dd51249f91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2c743efd2d1ee64e94324664808f623dd865872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef72ff6650c4ebf2b444708d84df66db42f262d9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80952.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80952"
    },
    {
      "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: master: Fix info leak and UAF in device unregister path"
}