{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.5-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "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's internal check and returning CPU 0's topology.",
  "id": "DEBIAN-CVE-2026-80670",
  "modified": "2026-09-14T16:47:36.556338145Z",
  "published": "2026-08-28T08:16:52.317Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80670"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-80670"
  ]
}