{
  "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": "7.2.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  xfrm: hold net_device reference under RCU in bundle creation  xfrm_bundle_create() and xfrm_create_dummy_bundle() read dst-\u003edev into a local pointer without taking a device reference, then pass it to xfrm_fill_dst(). A concurrent RTM_DELLINK replaces dst-\u003edev via dst_dev_put() and frees the old net_device, causing a use-after-free when xfrm6_fill_dst() later dereferences the stale dev pointer.    BUG: KASAN: slab-use-after-free in xfrm6_fill_dst+0x82c/0x860   (net/ipv6/xfrm6_policy.c:86 netdev_hold())   Read of size 8 at addr ffff8880142fe588 by task exploit/153   Call Trace:    xfrm6_fill_dst+0x82c/0x860    xfrm_resolve_and_create_bundle+0x21d4/0x2bd0    xfrm_lookup_with_ifid+0x485/0x1640    ip6_dst_lookup_flow+0x19b/0x1e0    udpv6_sendmsg+0x1443/0x2dd0  Fix this by reading dst-\u003edev via dst_dev_rcu() and keeping the RCU read-side critical section active until xfrm_fill_dst() has taken the required device references.",
  "id": "DEBIAN-CVE-2026-98364",
  "modified": "2026-10-07T04:47:33.926339147Z",
  "published": "2026-10-06T09:18:30.547Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98364"
    }
  ],
  "upstream": [
    "CVE-2026-98364"
  ]
}