{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.2.0-alpha"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "75f2c8bfb0ffc63e68979928e0b1aa3f457263aa"
            }
          ],
          "repo": "https://github.com/identd-ng/pam_authnft",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5jj5-hm34-78vh"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125",
      "CWE-191"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43916.json"
  },
  "details": "pam_authnft is a PAM session module binding nftables firewall rules to authenticated sessions via cgroupv2 inodes. Prior to 0.2.0-alpha, a heap buffer over-read in peer_lookup_tcp (src/peer_lookup.c:134, prior to the fix) allowed a crafted NETLINK_SOCK_DIAG reply to slip past the message-size check, then dereference past the end of the allocation. This vulnerability is fixed in 0.2.0-alpha.",
  "id": "CVE-2026-43916",
  "modified": "2026-07-08T05:36:28.945221408Z",
  "published": "2026-05-12T13:31:44.359Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43916.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/identd-ng/pam_authnft/security/advisories/GHSA-5jj5-hm34-78vh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43916"
    },
    {
      "type": "FIX",
      "url": "https://github.com/identd-ng/pam_authnft/pull/10"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pam_authnft: Heap buffer overflow in NETLINK_SOCK_DIAG reply walker"
}