{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.2.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2b209bc4e3d612ff9aca87125e67c0ff84477e61"
            },
            {
              "fixed": "67b6d03ebaa3341e2eee2aa74502003fd11e31de"
            }
          ],
          "repo": "https://github.com/vbpf/prevail",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2qc8-qh94-66rc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-682"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53670.json"
  },
  "details": "PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add() silently skips offset-variable updates when the destination register carries a non-singleton typeset (two or more simultaneously possible pointer types). Subsequent bounds checks use the stale offset and accept out-of-bounds memory accesses, so a crafted BPF program passes verification even though it would corrupt memory at runtime. This issue has been patched in version 0.2.4.",
  "id": "CVE-2026-53670",
  "modified": "2026-09-04T03:30:37.082841645Z",
  "published": "2026-09-02T17:54:43.900Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vbpf/prevail/releases/tag/v0.2.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53670.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vbpf/prevail/security/advisories/GHSA-2qc8-qh94-66rc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53670"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vbpf/prevail/commit/2b209bc4e3d612ff9aca87125e67c0ff84477e61"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PREVAIL: Non-singleton typeset in add() skips offset update, allowing OOB access to pass eBPF verification"
}