{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "5.10.0"
              },
              {
                "fixed": "5.10.36"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.11.0"
              },
              {
                "fixed": "5.11.20"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.12.0"
              },
              {
                "fixed": "5.12.3"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntools/power turbostat: Fix offset overflow issue in index converting\n\nThe idx_to_offset() function returns type int (32-bit signed), but\nMSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number.\nThe end result is that it hits the if (offset \u003c 0) check in update_msr_sum()\nwhich prevents the timer callback from updating the stat in the background when\nlong durations are used. The similar issue exists in offset_to_idx() and\nupdate_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.",
  "id": "CVE-2021-46940",
  "modified": "2026-03-15T21:47:30.678630273Z",
  "published": "2024-02-27T19:04:05.927Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ff"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}