{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b6eae0f61db27748606cc00dafcfd1e2c032f0a5"
            },
            {
              "fixed": "6fc36c2a925ceaba203eb13d75a8f0879a2c121b"
            },
            {
              "fixed": "a36cf138500e56f50db9f9a33222df6969b38326"
            },
            {
              "fixed": "9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d"
            },
            {
              "fixed": "e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e"
            },
            {
              "fixed": "2c638259ad750833fd46a0cf57672a618542d84c"
            },
            {
              "fixed": "a226e5b49e5fe8c98b14f8507de670189d191348"
            },
            {
              "fixed": "84af19855d1abdee3c9d57c0684e2868e391793c"
            },
            {
              "fixed": "a8aec14230322ed8f1e8042b6d656c1631d41163"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "8954771abdea5c34280870e35592c7226a816d95"
            },
            {
              "last_affected": "3e63a7f25cc85d3d3e174b9b0e3489ebb7eaf4ab"
            },
            {
              "last_affected": "1490de2bb0836fc0631c04d0559fdf81545b672f"
            },
            {
              "last_affected": "e31a8418c8df7e6771414f99ed3d95ba8aca4e05"
            },
            {
              "last_affected": "4f1a55a4f990016406147cf3e0c9487bf83e50f0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.4.164"
            },
            {
              "fixed": "4.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.9.137"
            },
            {
              "fixed": "4.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.14.81"
            },
            {
              "fixed": "4.15"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.18.19"
            },
            {
              "fixed": "4.19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.2"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.20"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31399.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/bus: Fix potential use after free in asynchronous initialization\n\nDingisoul with KASAN reports a use after free if device_add() fails in\nnd_async_device_register().\n\nCommit b6eae0f61db2 (\"libnvdimm: Hold reference on parent while\nscheduling async init\") correctly added a reference on the parent device\nto be held until asynchronous initialization was complete.  However, if\ndevice_add() results in an allocation failure the ref count of the\ndevice drops to 0 prior to the parent pointer being accessed.  Thus\nresulting in use after free.\n\nThe bug bot AI correctly identified the fix.  Save a reference to the\nparent pointer to be used to drop the parent reference regardless of the\noutcome of device_add().",
  "id": "CVE-2026-31399",
  "modified": "2026-07-08T05:37:32.019159375Z",
  "published": "2026-04-03T15:16:03.246Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fc36c2a925ceaba203eb13d75a8f0879a2c121b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84af19855d1abdee3c9d57c0684e2868e391793c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a36cf138500e56f50db9f9a33222df6969b38326"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31399.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31399"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "nvdimm/bus: Fix potential use after free in asynchronous initialization"
}