{
  "id": "CVE-2023-4881",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2023-09-11T17:15:07.547",
  "lastModified": "2023-09-11T18:02:20.103",
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "A stack based out-of-bounds write flaw was found in the netfilter subsystem in the Linux kernel. If the expression length is a multiple of 4 (register size), the `nft_exthdr_eval` family of functions writes 4 NULL bytes past the end of the `regs` argument, leading to stack corruption and potential information disclosure or a denial of service."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "secalert@redhat.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2
      }
    ]
  },
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2023-4881",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2238312",
      "source": "secalert@redhat.com"
    }
  ]
}