{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6ae30d6eb26bce02c48c60074b4306270e2434c1"
            },
            {
              "fixed": "7e7b93da7fa2e77f977096251899d1410986adf6"
            },
            {
              "fixed": "5eb489831a9fd4754f4baf26e6989efb66ce104c"
            },
            {
              "fixed": "0f4a767340fad392bd656115b8752005518c9065"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "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/2026/89xxx/CVE-2026-89701.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate nseconds in TIME_DELEG decode paths\n\nThe xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms\nstore a raw uint32_t nseconds directly into tv_nsec without enforcing\nnseconds \u003c NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this\ncheck but the TIME_DELEG paths do not. A malformed timespec can\npropagate through notify_change() to disk.\n\nAdd range checks in both nfs4xdr.c (SETATTR path) and\nnfs4callback.c (CB_GETATTR path).",
  "id": "CVE-2026-89701",
  "modified": "2026-09-13T03:30:28.370389907Z",
  "published": "2026-09-11T19:46:18.807Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89701.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89701"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfsd: validate nseconds in TIME_DELEG decode paths"
}