{
  "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"
            },
            {
              "fixed": "6.12.113-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ipv6: sr: use skb_get_hash_net() in seg6_make_flowlabel()  Since commit d58e468b1112 (\"flow_dissector: implements flow dissector BPF hook\") __skb_flow_dissect() needs a net pointer, either from skb-\u003edev, skb-\u003esk, or since commit 3cbf4ffba5ee (\"net: plumb network namespace into __skb_flow_dissect\") a caller provided pointer.  syzbot was able to reach seg6_make_flowlabel() with an skb having neither skb-\u003edev nor skb-\u003esk set: a TIPC UDP bearer sends a discovery message through an IPv4 route using seg6 encap, while net.ipv6.seg6_flowlabel is set to 1.  seg6_make_flowlabel() already has a net pointer, use skb_get_hash_net().  WARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0x910/0x5368 net/core/flow_dissector.c:1126, CPU#0: syz.0.17/4930 Call trace:   __skb_flow_dissect+0x910/0x5368 net/core/flow_dissector.c:1126 (P)   __skb_get_hash_net+0xe0/0x29c net/core/flow_dissector.c:1903   skb_get_hash include/linux/skbuff.h:1663 [inline]   seg6_make_flowlabel+0xcc/0x1ec net/ipv6/seg6_iptunnel.c:132   __seg6_do_srh_encap+0x320/0xbf4 net/ipv6/seg6_iptunnel.c:161   seg6_do_srh+0x4b4/0xa44 net/ipv6/seg6_iptunnel.c:431   seg6_output_core+0x164/0x688 net/ipv6/seg6_iptunnel.c:681   seg6_output+0x44/0x1ac net/ipv6/seg6_iptunnel.c:744   lwtunnel_output+0x3d0/0x664 net/core/lwtunnel.c:356   dst_output include/net/dst.h:470 [inline]   ip_local_out+0x110/0x148 net/ipv4/ip_output.c:131   iptunnel_xmit+0x50c/0xd38 net/ipv4/ip_tunnel_core.c:97   udp_tunnel_xmit_skb+0x220/0x348 net/ipv4/udp_tunnel_core.c:187   tipc_udp_xmit+0x75c/0x9c0 net/tipc/udp_media.c:202   tipc_udp_send_msg+0x214/0x374 net/tipc/udp_media.c:274   tipc_bearer_xmit_skb+0x260/0x3b0 net/tipc/bearer.c:576   tipc_enable_bearer net/tipc/bearer.c:366 [inline]   __tipc_nl_bearer_enable+0xc90/0xfb0 net/tipc/bearer.c:1048   tipc_nl_bearer_enable+0x2c/0x48 net/tipc/bearer.c:1057   genl_family_rcv_msg_doit+0x1e4/0x2d4 net/netlink/genetlink.c:1114",
  "id": "DEBIAN-CVE-2026-98934",
  "modified": "2026-10-24T05:47:36.908354619Z",
  "published": "2026-10-23T13:17:14.253Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98934"
    }
  ],
  "upstream": [
    "CVE-2026-98934"
  ]
}