CVE-2026-98846

{
  "etk_id": "ETK-2026-2490",
  "cve_id": "CVE-2026-98846",
  "display_id": "CVE-2026-98846",
  "ghsa_id": "GHSA-gghw-9hqp-85hc",
  "euvd_id": "EUVD-2026-103786",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Use-after-free in Linux kernel SCTP send path",
  "summary": "Linux kernels lacking the SCTP fix can mishandle association lifetime during a send operation. An SCTP peer may help trigger a race that leads to unsafe kernel memory access when SCTP is enabled and concurrent socket shutdown and send activity occur.",
  "mitigation": "Update to a kernel build that includes the applicable upstream fix: e8f972b1759d26bbefe4c524caae1ed7c8a593bd, e701345d886e831fb593a0870d69c8c5de6fc938, 222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669, or 4f1da630d13de0370e2f6361f961f1c8b384af1c. Until updated, disable SCTP where it is not required.",
  "vendor": "Linux",
  "product": "Linux",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 668c9beb9020d5834ee9e43c208190a07d2b1928, < e8f972b1759d26bbefe4c524caae1ed7c8a593bd",
        ">= 668c9beb9020d5834ee9e43c208190a07d2b1928, < e701345d886e831fb593a0870d69c8c5de6fc938",
        ">= 668c9beb9020d5834ee9e43c208190a07d2b1928, < 222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669",
        ">= 668c9beb9020d5834ee9e43c208190a07d2b1928, < 4f1da630d13de0370e2f6361f961f1c8b384af1c"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "e8f972b1759d26bbefe4c524caae1ed7c8a593bd",
        "e701345d886e831fb593a0870d69c8c5de6fc938",
        "222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669",
        "4f1da630d13de0370e2f6361f961f1c8b384af1c"
      ],
      "package_name": "Linux",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "4.16"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Linux",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": null,
  "cvss_src": null,
  "cvss_vector": null,
  "epss_score": 0.0016,
  "epss_percentile": 0.0439,
  "epss_asof": "2026-10-22",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 44.13353386666667,
  "t0_at": "2026-10-18T15:50:34.714000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T20:38:12.843781+00:00",
      "days": 4.199746872465278,
      "is_lower_bound": false,
      "measured_at": "2026-10-18T15:50:34.714000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-18T15:50:34.714000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-18T15:50:34.714000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98846"
    }
  }
}