{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5e76b25d7cc82c148d391c0c43b884e6427cb302"
            },
            {
              "fixed": "8836405abdc53ca3dd5fc68b2cf6f8f012fad011"
            }
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
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            {
              "introduced": "07b68ff5c71cf4ed5443016d8eb116863c0a4d88"
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            {
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            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3fdc546462348b8a497c72bc894e0cde9f10fc40"
            },
            {
              "fixed": "5ec37edcb534f3fc92304be236d37f08e6545585"
            },
            {
              "fixed": "1e04be34cafae119e82bcaccd6d28a20f72a3647"
            },
            {
              "fixed": "161d1aaeb04d620d3692639700512bb5038c1e10"
            },
            {
              "fixed": "c8a24effd96d4779e2ad779654682304491c55a5"
            },
            {
              "fixed": "46eb17d45be69d28c7a23ea03283b207426a8232"
            },
            {
              "fixed": "9e18e83b8846a5c3fe13fc8a464b4865d33996c6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
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            {
              "introduced": "5.10.220"
            },
            {
              "fixed": "5.10.260"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
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            },
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            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
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          ],
          "type": "ECOSYSTEM"
        },
        {
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              "introduced": "5.11.0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.177"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.1.0"
            },
            {
              "fixed": "6.6.144"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.12.95"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.18.38"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "7.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53398.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix SECINFO_NO_NAME decode error cleanup\n\nnfsd4_decode_secinfo_no_name() currently initializes sin_exp after\ndecoding sin_style. If the XDR stream is truncated, the decoder returns\nnfserr_bad_xdr before sin_exp is initialized.\n\nSince commit 3fdc54646234 (\"NFSD: Reduce amount of struct\nnfsd4_compoundargs that needs clearing\"), the inline iops array is not\ncleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore\nleave sin_exp holding stale union contents from a previous operation.\n\nThe error response path still invokes nfsd4_secinfo_no_name_release(),\nwhich calls exp_put() on a non-NULL sin_exp.\n\nInitialize sin_exp before the first failable decode step, matching\nnfsd4_decode_secinfo().",
  "id": "CVE-2026-53398",
  "modified": "2026-07-22T05:29:48.578214558Z",
  "published": "2026-07-19T12:01:59.507Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53398.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53398"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "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": "NFSD: Fix SECINFO_NO_NAME decode error cleanup"
}