{
  "cveId": "CVE-2026-98856",
  "url": "https://patchblox.com/security/cve/CVE-2026-98856",
  "summary": "CVE-2026-98856 is fixed in 39 products on 1 platform, first by DEBIAN-CVE-2026-98856, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "kprobes: Skip disarmed probes when checking optkprobe overlap",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  kprobes: Skip disarmed probes when checking optkprobe overlap  On x86, an optkprobe at A replaces five bytes with a jump. If a disabled probe B is at A\u002B2, get_optimized_kprobe() stops at B when arming a new probe C at A\u002B4. It leaves A optimized:                A    A\u002B1  A\u002B2  A\u002B3  A\u002B4   A\u0027s jump  | e9 | d0 | d1 | d2 | d3 |   after C   | e9 | d0 | d1 | d2 | cc |  The INT3 for C overwrites the last byte of A\u0027s jump displacement, so execution can jump to the wrong address. B can have prepared optinsns while disarmed, but has no jump to unoptimize.  Continue past disarmed and unprepared probes to find the active optimized probe before arming a probe in its jump.",
  "published": "2026-10-18T16:17:40Z",
  "severity": "Moderate",
  "cvss": 6.4,
  "epss": 0.00217,
  "epssPercentile": 0.12215,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98856",
  "fixes": [
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}