{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  smb: client: fix heap overflow in cifs_do_set_acl()  cifs_set_acl() validates ACL size using posix_acl_xattr_size():          4 + (count * 8)  // 4-byte header + 8 bytes per ACE  cifs_do_set_acl() then calls posix_acl_to_cifs() to write the CIFS wire format into the same buffer:          6 + (count * 10)  // 6-byte header + 10 bytes per ACE  An ACL that passes the xattr-based check in cifs_set_acl() can overflow the heap when posix_acl_to_cifs() writes the larger CIFS format.  Validate the CIFS format size against the remaining buffer space and USHRT_MAX before converting--data_count is __u16, so sizes above USHRT_MAX truncate the on-wire packet length, causing the server to apply a partial ACL.  Replace MaxDataCount = 1000 with min(CIFSMaxBufSize, USHRT_MAX).",
  "id": "DEBIAN-CVE-2026-99110",
  "modified": "2026-10-29T05:47:34.142152650Z",
  "published": "2026-10-28T11:17:30.410Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-99110"
    }
  ],
  "upstream": [
    "CVE-2026-99110"
  ]
}