{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4aece6a19cf7f474f15eb861ba74db4479884ce3"
            },
            {
              "fixed": "f31f3c042e024aef437cda42f0424ae8d4594b6c"
            },
            {
              "fixed": "8fa4804fe62ca4155a2d8fc2789d630376cbf2fc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.31"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90104.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.1: zero referring call lists before decoding\n\ndecode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so\neach referring_call_list starts uninitialized. decode_rc_list() assigns\nrcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero\nreferring calls therefore leaves the pointer uninitialized, and\nnfs4_callback_sequence() later passes stale slab contents to kfree().\n\nAllocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is\nNULL from the beginning, including valid empty referring call lists.",
  "id": "CVE-2026-90104",
  "modified": "2026-09-20T11:30:34.482370044Z",
  "published": "2026-09-17T16:06:14.191Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fa4804fe62ca4155a2d8fc2789d630376cbf2fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f31f3c042e024aef437cda42f0424ae8d4594b6c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90104.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90104"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NFSv4.1: zero referring call lists before decoding"
}