{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9"
            },
            {
              "fixed": "de83419b5062a6f83bb9421be77cae734cbead65"
            },
            {
              "fixed": "8407a2c1aa67c2a110a576df8f82a4e259188b82"
            },
            {
              "fixed": "a43d96620d080b1b2324a53e38dd7b4bff4825c1"
            },
            {
              "fixed": "4ab37e4f4a33c64d9e565dc8c4c3ed774f05c0e3"
            },
            {
              "fixed": "8fe3d6717f5536793727e60b7a0b7ec20c697def"
            },
            {
              "fixed": "53b21bc2df6e8ed538bceda93a5104a5fe6a8a84"
            },
            {
              "fixed": "086e8acb3a0e55f6d22d29fae2a4a3b1561bb766"
            },
            {
              "fixed": "8ec454dcd00ce3375119111c6394964455b36d0d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.273"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98934.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sr: use skb_get_hash_net() in seg6_make_flowlabel()\n\nSince commit d58e468b1112 (\"flow_dissector: implements flow dissector\nBPF hook\") __skb_flow_dissect() needs a net pointer, either from\nskb-\u003edev, skb-\u003esk, or since commit 3cbf4ffba5ee (\"net: plumb network\nnamespace into __skb_flow_dissect\") a caller provided pointer.\n\nsyzbot was able to reach seg6_make_flowlabel() with an skb having\nneither skb-\u003edev nor skb-\u003esk set: a TIPC UDP bearer sends a discovery\nmessage through an IPv4 route using seg6 encap, while\nnet.ipv6.seg6_flowlabel is set to 1.\n\nseg6_make_flowlabel() already has a net pointer, use skb_get_hash_net().\n\nWARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0x910/0x5368 net/core/flow_dissector.c:1126, CPU#0: syz.0.17/4930\nCall trace:\n  __skb_flow_dissect+0x910/0x5368 net/core/flow_dissector.c:1126 (P)\n  __skb_get_hash_net+0xe0/0x29c net/core/flow_dissector.c:1903\n  skb_get_hash include/linux/skbuff.h:1663 [inline]\n  seg6_make_flowlabel+0xcc/0x1ec net/ipv6/seg6_iptunnel.c:132\n  __seg6_do_srh_encap+0x320/0xbf4 net/ipv6/seg6_iptunnel.c:161\n  seg6_do_srh+0x4b4/0xa44 net/ipv6/seg6_iptunnel.c:431\n  seg6_output_core+0x164/0x688 net/ipv6/seg6_iptunnel.c:681\n  seg6_output+0x44/0x1ac net/ipv6/seg6_iptunnel.c:744\n  lwtunnel_output+0x3d0/0x664 net/core/lwtunnel.c:356\n  dst_output include/net/dst.h:470 [inline]\n  ip_local_out+0x110/0x148 net/ipv4/ip_output.c:131\n  iptunnel_xmit+0x50c/0xd38 net/ipv4/ip_tunnel_core.c:97\n  udp_tunnel_xmit_skb+0x220/0x348 net/ipv4/udp_tunnel_core.c:187\n  tipc_udp_xmit+0x75c/0x9c0 net/tipc/udp_media.c:202\n  tipc_udp_send_msg+0x214/0x374 net/tipc/udp_media.c:274\n  tipc_bearer_xmit_skb+0x260/0x3b0 net/tipc/bearer.c:576\n  tipc_enable_bearer net/tipc/bearer.c:366 [inline]\n  __tipc_nl_bearer_enable+0xc90/0xfb0 net/tipc/bearer.c:1048\n  tipc_nl_bearer_enable+0x2c/0x48 net/tipc/bearer.c:1057\n  genl_family_rcv_msg_doit+0x1e4/0x2d4 net/netlink/genetlink.c:1114",
  "id": "CVE-2026-98934",
  "modified": "2026-11-01T02:30:15.843416745Z",
  "published": "2026-10-23T12:11:43.459Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/086e8acb3a0e55f6d22d29fae2a4a3b1561bb766"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ab37e4f4a33c64d9e565dc8c4c3ed774f05c0e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53b21bc2df6e8ed538bceda93a5104a5fe6a8a84"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8407a2c1aa67c2a110a576df8f82a4e259188b82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ec454dcd00ce3375119111c6394964455b36d0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fe3d6717f5536793727e60b7a0b7ec20c697def"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a43d96620d080b1b2324a53e38dd7b4bff4825c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de83419b5062a6f83bb9421be77cae734cbead65"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98934.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98934"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "ipv6: sr: use skb_get_hash_net() in seg6_make_flowlabel()"
}