{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.113-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  thunderbolt: Reject oversized XDomain properties responses  tb_xdp_properties_request() allocates room for 45 data dwords in its 252-byte response buffer.  The XDomain length field is six bits wide, however, and a malicious peer can set it to 63.  After the fixed response fields are subtracted, the driver treats this as 48 data dwords.  Commit 322e93448d90 (\"thunderbolt: Clamp XDomain response data copy to allocation size\") only bounds the copy against data_len.  If data_len is at least 48, memcpy() reads 192 bytes from the 180-byte res-\u003edata array, causing a 12-byte heap out-of-bounds read.  Commit 4db2bd2ed478 (\"thunderbolt: Limit XDomain response copy to actual frame size\") limits the earlier copy but does not constrain this header-derived length.  Reject response data lengths that exceed the allocated source buffer before copying them into the assembled property block.",
  "id": "DEBIAN-CVE-2026-98687",
  "modified": "2026-10-19T04:47:34.809453826Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98687"
    }
  ],
  "upstream": [
    "CVE-2026-98687"
  ]
}