{
  "cveId": "CVE-2026-89911",
  "url": "https://patchblox.com/security/cve/CVE-2026-89911",
  "summary": "CVE-2026-89911 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-89911, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "KVM: arm64: Correctly cap TLBI Range to the architural limit",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: arm64: Correctly cap TLBI Range to the architural limit  TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the range to the base...  Make sure the range is capped to the limit dictated by the address bit that determines the VA range. For an IPA invalidation, this is further corrected down the line to ignore the upper range.",
  "published": "2026-09-16T11:17:00Z",
  "severity": "high",
  "cvss": 7.9,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
  "epss": 0.00159,
  "epssPercentile": 0.05033,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-89911",
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.51-120.162",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89911",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89911",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.51-120.162.amzn2023",
      "fix": "ALAS2023-2026-3187",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3187",
      "released": "2026-11-07T01:06:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}