GHSA-8CG3-6H68-W2CJ

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-28 09:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: require Ethernet MAC header before using eth_hdr()

ip6t_eui64, xt_mac, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nf_log_syslog access eth_hdr(skb) after either assuming that the skb is associated with an Ethernet device or checking only that the ETH_HLEN bytes at skb_mac_header(skb) lie between skb->head and skb->data.

Make these paths first verify that the skb is associated with an Ethernet device, that the MAC header was set, and that it spans at least a full Ethernet header before accessing eth_hdr(skb).

Severity
9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-53131"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:30Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: require Ethernet MAC header before using eth_hdr()\n\n`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and\n`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`\nafter either assuming that the skb is associated with an Ethernet\ndevice or checking only that the `ETH_HLEN` bytes at\n`skb_mac_header(skb)` lie between `skb-\u003ehead` and `skb-\u003edata`.\n\nMake these paths first verify that the skb is associated with an\nEthernet device, that the MAC header was set, and that it spans at\nleast a full Ethernet header before accessing `eth_hdr(skb)`.",
  "id": "GHSA-8cg3-6h68-w2cj",
  "modified": "2026-06-28T09:31:42Z",
  "published": "2026-06-25T09:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53131"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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