{
  "cveId": "CVE-2026-80670",
  "url": "https://patchblox.com/security/cve/CVE-2026-80670",
  "summary": "CVE-2026-80670 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80670 (version 7.1.5-1), released August 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "perf tools: Use perf_env__get_cpu_topology() in machine__resolve()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  perf tools: Use perf_env__get_cpu_topology() in machine__resolve()  machine__resolve() accesses env-\u003Ecpu[al-\u003Ecpu].socket_id after checking al-\u003Ecpu \u003E= 0 and env-\u003Ecpu != NULL, but without validating al-\u003Ecpu against env-\u003Enr_cpus_avail.  Since al-\u003Ecpu comes from the untrusted perf.data sample, a crafted file with a large CPU index causes an out-of-bounds heap read.  Use perf_env__get_cpu_topology() which validates both NULL and bounds. Also bounds-check al-\u003Ecpu before the cast to struct perf_cpu (int16_t): without this, values like 65536 silently truncate to 0, bypassing the accessor\u0027s internal check and returning CPU 0\u0027s topology.",
  "published": "2026-08-28T08:16:52Z",
  "severity": "Low",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00671,
  "epssPercentile": 0.52286,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80670",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-80670",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80670",
      "released": "2026-08-29T00:46:20Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}