{
  "id": "CVE-2026-98317",
  "url": "https://spydr.io/cve/CVE-2026-98317",
  "published": "2026-10-06T09:18:23.530Z",
  "modified": "2026-10-06T09:18:23.530Z",
  "score": null,
  "severity": null,
  "cvss_version": null,
  "vector": null,
  "score_source": null,
  "epss": 0.00184,
  "epss_percentile": 0.07257,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": null,
  "vendors": [
    "Linux"
  ],
  "products": [
    "Linux"
  ],
  "cwes": [],
  "description": "In the Linux kernel, the following vulnerability has been resolved: neighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS. NDTPA_INTERVAL_PROBE_TIME_MS sets .type and .min but misses .validation_type, so no validation is applied: # ynl --family rt-neigh --do setneightbl \\ --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 0}}' # ynl --family rt-neigh --dump getneightbl --output-json | \\ jq '.[] | select(.name == \"arp_cache\" and has(\"config\")) | .parms[\"interval-probe-time-ms\"]' 0 Moreover, nla_get_msecs() uses msecs_to_jiffies(), and u64 is silently cast to u32, so a larger value can bypass the min check: e.g. 4294967296 == 0x100000000 # ynl --family rt-neigh --do setneightbl \\ --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 4294967296}}' # ynl --family rt-neigh --dump getneightbl --output-json | \\ jq '.[] | select(.name == \"arp_cache\" and has(\"config\")) | .parms[\"interval-probe-time-ms\"]' 0 msecs_to_jiffies() returns MAX_JIFFY_OFFSET if the value is larger than INT_MAX. Also, INT_MAX ms overflows int NEIGH_VAR() when HZ > 1000 (Alpha, MIPS), and passing a negative integer to queue_delayed_work(unsigned long delay) causes sign extension, which wraps around the expiry time to the past, resulting in it being handled as 0 delay in the timer wheel. Let's use NLA_POLICY_FULL_RANGE() and limit the max to 1 day. The same max check is applied to sysctl as well. Note that this controls the probe interval for NTF_MANAGED entries, so the max of 1 day is unlikely to break any deployments.",
  "status": "Received",
  "score_type": null,
  "scores": {
    "cvss_v40": null,
    "cvss_v31": null,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6d79b223ec44ada58ad37db42f539b60985a7722",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/8550b50e49b01b572e653e572f24ddd73949aa74",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/982c7f66c04134b77126edbfd8a63ecd6928cfd9",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98317",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}