{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98526",
  "modified": "2026-10-19T04:30:01Z",
  "upstream": [
    "CVE-2026-98526"
  ],
  "published": "2026-10-18T15:22:13Z",
  "summary": "llc: reserve device headroom for allocated frames",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: reserve device headroom for allocated frames\n\nllc_alloc_frame() reserves link-layer headroom using the device type.\nThis is insufficient for stacked Ethernet devices such as VLAN devices,\nwhere vlan_dev_hard_header() pushes a VLAN header before the lower\ndevice's Ethernet header. An LLC response on such a device can\ntherefore underflow skb headroom in eth_header().\n\nUse LL_RESERVED_SPACE() to account for the device's actual required\nheadroom while preserving the existing LLC device-type check.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98526"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-18T15:22:13Z"
  }
}