{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "5.3"
              },
              {
                "fixed": "5.4.120"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.5"
              },
              {
                "fixed": "5.10.38"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.11"
              },
              {
                "fixed": "5.11.22"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.12"
              },
              {
                "fixed": "5.12.5"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: Fix out-of-bound access in uclamp\n\nUtil-clamp places tasks in different buckets based on their clamp values\nfor performance reasons. However, the size of buckets is currently\ncomputed using a rounding division, which can lead to an off-by-one\nerror in some configurations.\n\nFor instance, with 20 buckets, the bucket size will be 1024/20=51. A\ntask with a clamp of 1024 will be mapped to bucket id 1024/51=20. Sadly,\ncorrect indexes are in range [0,19], hence leading to an out of bound\nmemory access.\n\nClamp the bucket id to fix the issue.",
  "id": "CVE-2021-46993",
  "modified": "2026-03-15T21:50:00.764550428Z",
  "published": "2024-02-28T09:15:37.880Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f7347c85490b92dd144fa1fba9e1eca501656ab3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3da3f804b82a0a382d523a21acf4cf3bb35f936d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/42ee47c7e3569d9a0e2cb5053c496d97d380472f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/687f523c134b7f0bd040ee1230f6d17990d54172"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6d2f8909a5fabb73fe2a63918117943986c39b6c"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}