{
  "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"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  l2tp: fix tunnel and session refcount leak on seq_file release  In pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state (pd-\u003etunnel and pd-\u003esession) is kept in seq_file private data to allow iteration across multiple read() system calls.  However, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels before reading to end-of-file (EOF), any tunnel or session reference stored in pd-\u003etunnel / pd-\u003esession is left un-dropped when seq_file private data is freed.  Fix this by dropping any remaining pd-\u003etunnel and pd-\u003esession references in pppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file.",
  "id": "DEBIAN-CVE-2026-74735",
  "modified": "2026-09-14T16:47:30.187398395Z",
  "published": "2026-08-26T15:16:52.057Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-74735"
    }
  ],
  "upstream": [
    "CVE-2026-74735"
  ]
}