{
  "cveId": "CVE-2026-98950",
  "url": "https://patchblox.com/security/cve/CVE-2026-98950",
  "summary": "CVE-2026-98950 is fixed in 19 products on 1 platform, first by DEBIAN-CVE-2026-98950, released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()  bpf_flow_dissect() sanitizes the offsets returned by the BPF program with clamp_t(u16, ..., hlen).  If hlen is bigger than 65535, the upper bound is truncated before the comparison. For instance, with hlen == 65536, both nhoff and thoff are forced to zero, even if the program returned sane values.  This is the same class of bug as the one fixed in commit 99bda1ecbd56 (\u0022flow_dissector: avoid u16 truncation of skb-\u003Elen when computing thoff\u0022). That fix does not cover the BPF path, because __skb_flow_dissect() returns early when a BPF flow dissector handles the packet.  struct bpf_flow_keys stores nhoff and thoff as u16, so cap hlen to U16_MAX before clamping.  Found by sashiko while reviewing the commit above.",
  "published": "2026-10-23T13:17:16Z",
  "severity": "Low",
  "cvss": 3.4,
  "epss": 0.00185,
  "epssPercentile": 0.08158,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98950",
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.12.113-138.209",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-98950",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98950",
      "released": "2026-10-24T13:25:57Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.11-1",
      "fix": "DEBIAN-CVE-2026-98950",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98950",
      "released": "2026-10-24T13:25:57Z"
    },
    {
      "platform": "linux",
      "product": "perf6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "perf6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.113-138.209.amzn2023",
      "fix": "ALAS2023-2026-3335",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3335",
      "released": "2026-11-07T01:06:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}