{
  "cveId": "CVE-2026-80991",
  "url": "https://patchblox.com/security/cve/CVE-2026-80991",
  "summary": "CVE-2026-80991 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-80991, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "net: ravb: serialize PTP clock teardown",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: ravb: serialize PTP clock teardown  ravb_ptp_interrupt() can race with ravb_ptp_stop() and pass the clock to ptp_clock_event() while ptp_clock_unregister() is freeing it. This can lead to a use-after-free.  Use READ_ONCE() and WRITE_ONCE() for lockless access to the clock pointer. Atomically detach it with xchg() before disabling PTP interrupts, then synchronize all IRQs which can invoke ravb_ptp_interrupt() before unregistering the detached clock.  A handler which read the old pointer completes before the clock is unregistered, while later handlers read NULL and skip the event.",
  "published": "2026-09-11T20:19:05Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00164,
  "epssPercentile": 0.05679,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80991",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-80991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80991",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-80991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80991",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-80991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80991",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}