{
  "cveId": "CVE-2026-99167",
  "url": "https://patchblox.com/security/cve/CVE-2026-99167",
  "summary": "CVE-2026-99167 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99167, released November 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "net/sched: fix use-after-free in __tcf_action_put()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net/sched: fix use-after-free in __tcf_action_put()  __tcf_action_put() decrements the reference count before decrementing the binding count. Another thread can free the action between these operations, causing the binding-count update to access freed memory. KASAN reports it as:    BUG: KASAN: slab-use-after-free in __tcf_action_put\u002B0x327/0x340   Write of size 4 at addr ff11000000d46420 by task tc-put-pause/64  Hold the action IDR mutex across both counter updates and IDR removal, keeping cleanup outside the lock.",
  "published": "2026-10-28T11:17:37Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.0013,
  "epssPercentile": 0.02669,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99167",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99167",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99167",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.13-1",
      "fix": "DEBIAN-CVE-2026-99167",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99167",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}