{
  "threat_severity" : "Moderate",
  "public_date" : "2026-04-13T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Linux kernel: Netfilter Denial of Service due to netlink header size miscalculation",
    "id" : "2457825",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2457825"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-131",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nfnetlink_log: account for netlink header size\nThis is a followup to an old bug fix: NLMSG_DONE needs to account\nfor the netlink header size, not just the attribute size.\nThis can result in a WARN splat + drop of the netlink message,\nbut other than this there are no ill effects.", "A flaw was found in the Linux kernel's netfilter subsystem, specifically within `nfnetlink_log`. A local user could exploit this vulnerability by sending a crafted netlink message that causes an incorrect accounting of the netlink header size. This miscalculation can lead to a Denial of Service (DoS), resulting in a warning message and the dropping of the netlink message." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-31416\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31416\nhttps://lore.kernel.org/linux-cve-announce/2026041310-CVE-2026-31416-9c4a@gregkh/T" ],
  "name" : "CVE-2026-31416",
  "csaw" : false
}