{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.10-rc5"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a06e89ab05eaa2b8344d521319399333cd760ae5"
            },
            {
              "fixed": "0bbf09859658b8cc9ac13be41af23b516b8ef69a"
            }
          ],
          "repo": "https://github.com/u-boot/u-boot",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-195"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74220.json"
  },
  "details": "U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.",
  "id": "CVE-2026-74220",
  "modified": "2026-10-02T03:31:08.844729716Z",
  "published": "2026-09-29T21:29:22.617Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74220.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74220"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-buffer-overflow-via-nfs-read-reply"
    },
    {
      "type": "FIX",
      "url": "https://github.com/u-boot/u-boot/commit/0bbf09859658b8cc9ac13be41af23b516b8ef69a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/u-boot/u-boot"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L695"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "U-Boot before 2026.10-rc5 Buffer Overflow via NFS READ Reply"
}