{
  "affected": [
    {
      "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": "7.2.9-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ipv6: Fix dst leak for uncached routes.  ip6_route_output_flags(), ip6_rt_put_flags(), and ip6_dst_check() detect an uncached route by list_empty(\u0026rt-\u003edst.rt_uncached), which replaced the static DST_NOCACHE flag check in commit a4c2fd7f7891 (\"net: remove DST_NOCACHE flag\").  When a device is unregistered, rt6_uncached_list_flush_dev() unlinks uncached routes tied to the device from rt6_uncached_list.  Previously, they were moved to another list with list_move() (__list_del_entry() + list_add()), and since commit 98aa546af5e4 (\"inet: remove (struct uncached_list)-\u003equarantine\"), the routes are just unlinked with list_del_init().  If list_del_init() runs concurrently, list_empty() evaluates to true; ip6_route_output_flags() calls dst_hold_safe() incorrectly and ip6_rt_put_flags() skips ip6_rt_put(), leaking dst, and thus dev tied via rt-\u003efrom as well.  The same race is partially fixed by commit 9a6f0c4d5796 (\"dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list()\").  Let's check rt6-\u003edst.rt_uncached_list instead.  Note that IPv4 does not have the same issue.",
  "id": "DEBIAN-CVE-2026-98596",
  "modified": "2026-10-19T04:47:37.653983719Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98596"
    }
  ],
  "upstream": [
    "CVE-2026-98596"
  ]
}