{
  "cveId": "CVE-2026-98268",
  "url": "https://patchblox.com/security/cve/CVE-2026-98268",
  "summary": "CVE-2026-98268 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98268 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  perf: Fix null pointer access in is_include_gues...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  perf: Fix null pointer access in is_include_guest_event()  A typical module unload occurring event when there is an active perf connection leads to freeing of the pmu pointer. The call log is something like:  ..  __pmu_detach_event  pmu_detach_event  pmu_detach_events  perf_pmu_unregister  ..  __pmu_detach_event() sets event-\u003Epmu to null. When the perf connection finally is closed, the following stack trace is observed:   Oops: general protection fault, kernel NULL pointer dereference  ...  RIP: 0010:_free_event\u002B0x3e/0x370  ...  Call Trace:  ...  perf_event_release_kernel\u002B0x260/0x2d0  perf_release\u002B0x12/0x20  A call to mediated_pmu_unaccount_event() inside _free_event() is the root cause of this crash. Adding a check inside is_include_guest_event() ensures we don\u0027t accidentally access a null pmu ptr. In addition to this, we will now call mediated_pmu_unaccount_event() before clearing the pmu ptr so that nr_include_guest_events counts are maintained correctly.",
  "published": "2026-10-06T09:18:16Z",
  "severity": "",
  "epss": 0.00155,
  "epssPercentile": 0.04716,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98268",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98268",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "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"
  }
}