CVE-2026-98934

Что произошло

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->dev, skb->sk, 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->dev nor skb->sk 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

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "de83419b5062a6f83bb9421be77cae734cbead65",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "8407a2c1aa67c2a110a576df8f82a4e259188b82",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "a43d96620d080b1b2324a53e38dd7b4bff4825c1",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "4ab37e4f4a33c64d9e565dc8c4c3ed774f05c0e3",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "8fe3d6717f5536793727e60b7a0b7ec20c697def",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "53b21bc2df6e8ed538bceda93a5104a5fe6a8a84",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "086e8acb3a0e55f6d22d29fae2a4a3b1561bb766",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
  "lessThan": "8ec454dcd00ce3375119111c6394964455b36d0d",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "4.20"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "4.20",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "5.10.273",
  "versionType": "semver",
  "lessThanOrEqual": "5.10.*"
}

{
  "status": "unaffected",
  "version": "5.15.224",
  "versionType": "semver",
  "lessThanOrEqual": "5.15.*"
}

{
  "status": "unaffected",
  "version": "6.1.191",
  "versionType": "semver",
  "lessThanOrEqual": "6.1.*"
}

{
  "status": "unaffected",
  "version": "6.6.160",
  "versionType": "semver",
  "lessThanOrEqual": "6.6.*"
}

{
  "status": "unaffected",
  "version": "6.12.113",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.56",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.10",
  "versionType": "semver",
  "lessThanOrEqual": "7.2.*"
}

{
  "status": "unaffected",
  "version": "7.3",
  "versionType": "original_commit_for_fix",
  "lessThanOrEqual": "*"
}

CVSS: оценки и векторы

Оценка CVSS отсутствует.

Источники и ссылки

{
  "cwes": [],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:49.077584+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.939421+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.939421+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.939421+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:49.077584+00:00"
  },
  "references": [
    "cve",
    "ghsa",
    "nvd"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.939421+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены03.11.2026, 00:15
2. Данные обновлены02.11.2026, 00:13
3. Данные обновлены31.10.2026, 12:00
4. Данные обновлены30.10.2026, 20:51
5. Данные обновлены30.10.2026, 15:58
6. Данные обновлены29.10.2026, 12:47
7. Опубликована28.10.2026, 23:15

Личная заметка и статус

Другие CVE того же продукта