{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bf9ae5386bca8836c16e69ab8fdbe46767d7452a"
            },
            {
              "fixed": "018020f5a48cc86fdd6dc2d380f6c70443ae7639"
            },
            {
              "fixed": "3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1"
            },
            {
              "fixed": "7c38524b2b2456bd33cb360420da6cbf9cad1b33"
            },
            {
              "fixed": "1937222c2511ac91377d39f28106c34734f5f8c6"
            },
            {
              "fixed": "16ceac2daa89dd16917bc488ab05b9dd6961a603"
            },
            {
              "fixed": "e06f8b6e27cc616d3c587e9784c4a033eb310a16"
            },
            {
              "fixed": "3361c93e417384ebf28003e0fb6d5304653d3b05"
            },
            {
              "fixed": "72b5b9a28b996e09b8b5b944370c79851bb68f52"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.34"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98526.json"
  },
  "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.",
  "id": "CVE-2026-98526",
  "modified": "2026-10-19T02:30:58.976726333Z",
  "published": "2026-10-18T15:17:44.018Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98526.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98526"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "llc: reserve device headroom for allocated frames"
}