{
  "cveId": "CVE-2026-99244",
  "url": "https://patchblox.com/security/cve/CVE-2026-99244",
  "summary": "CVE-2026-99244 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99244, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  pid_namespace: prevent TIF_NOTIFY_SIGNAL from in...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  pid_namespace: prevent TIF_NOTIFY_SIGNAL from interrupting the reaper  Since commit 7fea700e04bd (\u0022zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING\u0022) zap_pid_ns_processes() clears TIF_NOTIFY_SIGNAL before every kernel_wait4() call. Otherwise kernel_wait4() doesn\u0027t sleep and returns -ERESTARTSYS if signal_pending() is true and the reaper busy-waits.  But clearing TIF_NOTIFY_SIGNAL doesn\u0027t fix it. It can get raised again. For example, klp_send_signals() sets it raw against any task that hasn\u0027t transitioned yet. And it keeps sending it until the livepatch finishes.  The sleep loop waiting for pid_allocated to drop has the same problem and it doesn\u0027t even clear anything. So a schedule() in TASK_INTERRUPTIBLE returns immediately.  Use a no_notify_signal guard. signal_pending() will ignore TIF_NOTIFY_SIGNAL and the pid namespace reaper sleeps until a child exits or free_pid() wakes it.",
  "published": "2026-11-03T12:17:30Z",
  "severity": "",
  "epss": 0.00197,
  "epssPercentile": 0.09463,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-1",
      "fix": "DEBIAN-CVE-2026-99244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99244",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.14-1",
      "fix": "DEBIAN-CVE-2026-99244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99244",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}