{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.187-1"
            }
          ],
          "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": "7.1.13-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  xfrm: espintcp: fix UAF during close  ZDI reported and analyzed a race condition during close for espintcp sockets:      espintcp_close() frees emsg-\u003eskb via kfree_skb() without holding     any socket lock. Concurrently, the xfrm_trans_reinject work queue     invokes esp_output_tcp_finish() -\u003e espintcp_push_skb() -\u003e     espintcp_push_msgs() -\u003e skb_send_sock_locked(), which reads the     same skb as a data source.  Fix this by adding a synchronize_rcu() call after resetting sk_prot, since esp_output_tcp_finish() runs under RCU and won't use a socket with sk_prot == \u0026tcp_prot.  Simply taking the socket lock in espintcp_close() could lead to leaks, if esp_output_tcp_finish() re-adds an skb in the slot we just freed. After this, the existing barrier() is no longer needed.",
  "id": "DEBIAN-CVE-2026-80848",
  "modified": "2026-09-14T16:47:32.326073882Z",
  "published": "2026-09-04T16:18:13.540Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80848"
    }
  ],
  "upstream": [
    "CVE-2026-80848"
  ]
}