NFSD: prevent underflow in nfssvc_decode_writeargs()

{
  "id": "99e49c90ea0ec4683ac74c2acde9d7cb728b2d26c63b6db4aad5992a33bc56ce",
  "url": "https://osv.dev/vulnerability/CVE-2022-49280",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NFSD: prevent underflow in nfssvc_decode_writeargs()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvc_decode_writeargs() Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvc_decode_writeargs() warn: no lower bound on 'args->len' Change the type to unsigned to prevent this issue.",
    "evidence": "osv:CVE-2022-49280",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.16.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.17.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2022-49280",
      "aliases": [
        "CVE-2022-49280"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a51b5b737a0be93fae6ea2a18df03ab2359a3f4b"
                },
                {
                  "fixed": "614a61e1592051cc42d3c38f899c9f7bdaad8a1d"
                },
                {
                  "fixed": "2764af8ce0bf03cc43ee4a11897cab96bde6caae"
                },
                {
                  "fixed": "413d8fefafe531a9442bb623e3fe292a38f88d65"
                },
                {
                  "fixed": "184416d4b98509fb4c3d8fc3d6dc1437896cc159"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49280.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.12.0"
                },
                {
                  "fixed": "5.15.33"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.16.19"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.17.0"
                },
                {
                  "fixed": "5.17.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49280.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.396719637Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/184416d4b98509fb4c3d8fc3d6dc1437896cc159",
        "https://git.kernel.org/stable/c/2764af8ce0bf03cc43ee4a11897cab96bde6caae",
        "https://git.kernel.org/stable/c/413d8fefafe531a9442bb623e3fe292a38f88d65",
        "https://git.kernel.org/stable/c/614a61e1592051cc42d3c38f899c9f7bdaad8a1d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49280.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49280",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49280.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49280",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496047,
  "published_at": "2025-02-26T01:56:22.662+00:00"
}