CVE-2026-99277

{
  "etk_id": "ETK-2026-3845",
  "cve_id": "CVE-2026-99277",
  "display_id": "CVE-2026-99277",
  "ghsa_id": "GHSA-p59r-fqh3-3h8x",
  "euvd_id": "EUVD-2026-119285",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Use-after-free in Linux kernel ksmbd session channels",
  "summary": "Linux kernels with the ksmbd SMB server are affected by a connection lifetime flaw involving session channels. An attacker able to exercise affected SMB session and channel activity may trigger access to a connection after it has been freed, creating a kernel memory-safety condition. Exploitation requires ksmbd to be enabled and reachable or otherwise usable by the attacker.",
  "mitigation": "Upgrade to Linux kernel 7.3 or a distribution kernel release that includes the listed ksmbd fix. Disable ksmbd where it is not required until the update can be deployed.",
  "vendor": "Linux",
  "product": "Linux",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= d7fd1f98607f2cd358e583f9548bdf0173090a86, < 4b333aed69cfc2c8687b86b6a4364a0dffc16dd8",
        ">= d7fd1f98607f2cd358e583f9548bdf0173090a86, < add8d7fb04efe564193df73581889c62fc0016f1",
        "c99ea7855124ca1428a1e59c2b4590aaef34eacf",
        ">= 7.2.8, < 7.3"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4b333aed69cfc2c8687b86b6a4364a0dffc16dd8",
        "add8d7fb04efe564193df73581889c62fc0016f1",
        "7.3"
      ],
      "package_name": "Linux",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "7.3"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Linux",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": null,
  "cvss_src": null,
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 10.1318529,
  "t0_at": "2026-11-07T14:08:46.710000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-07T14:08:46.710000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T14:08:46.710000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-99277"
    }
  }
}