{
  "schema_version": "1.4.0",
  "id": "GHSA-vw35-vgjr-5jhv",
  "modified": "2022-08-06T00:00:38Z",
  "published": "2022-05-24T17:42:57Z",
  "aliases": [
    "CVE-2021-20194"
  ],
  "details": "There is a vulnerability in the linux kernel versions higher than 5.2 (if kernel compiled with config params CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY not set, and BPF hook to getsockopt is registered). As result of BPF execution, the local user can trigger bug in __cgroup_bpf_run_filter_getsockopt() function that can lead to heap overflow (because of non-hardened usercopy). The impact of attack could be deny of service or possibly privileges escalation.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20194"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2021:4140"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2021:4356"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-20194"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1912683"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210326-0003"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-787"
    ],
    "severity": "HIGH",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-02-23T23:15:00Z"
  }
}