{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2026.04-rc3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4f70106beafe30df8b0528a3d8b2543cd48fe241"
            }
          ],
          "repo": "https://github.com/u-boot/u-boot",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29007.json"
  },
  "details": "U-Boot through 2026.04-rc3 contains an out-of-bounds read vulnerability in tcp_rx_state_machine() (net/tcp.c) when CONFIG_PROT_TCP is enabled, allowing remote attackers to read beyond TCP segment boundaries by crafting a malicious packet with a mismatched IP total length and TCP data offset field. Attackers can send a packet with an IP total length of 40 bytes and a TCP data offset claiming 60 bytes of header to cause tcp_parse_options() to read 40 bytes past the end of the TCP segment, potentially corrupting connection state variables such as rmt_win_scale and rmt_timestamp to disrupt TCP window calculations.",
  "id": "CVE-2026-29007",
  "modified": "2026-07-16T03:31:16.573138465Z",
  "published": "2026-07-08T16:11:25.888Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://u-boot.org/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29007.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29007"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/u-boot-rc3-out-of-bounds-read-in-tcp-rx-state-machine-via-tcp-c"
    },
    {
      "type": "REPORT",
      "url": "https://lists.denx.de/pipermail/u-boot/2026-May/617853.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/u-boot/u-boot"
    },
    {
      "type": "EVIDENCE",
      "url": "https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "U-Boot 2026.04-rc3 Out-of-Bounds Read in tcp_rx_state_machine via tcp.c"
}