{
  "cveId": "CVE-2021-1048",
  "url": "https://patchblox.com/security/cve/CVE-2021-1048",
  "summary": "CVE-2021-1048 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-1048, released December 15, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on May 23, 2022. Patch Radar priority: Patch now.",
  "title": "linux: In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free",
  "description": "In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-204573007References: Upstream kernel",
  "published": "2021-12-15T19:15:14Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.01058,
  "epssPercentile": 0.6468,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": false,
  "disclosed": false,
  "kev": {
    "added": "2022-05-23T00:00:00Z",
    "due": "2022-06-13T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply updates per vendor instructions."
  },
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.8.10-1",
      "fix": "DEBIAN-CVE-2021-1048",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-1048",
      "released": "2021-12-15T19:15:14Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.8.10-1",
      "fix": "DEBIAN-CVE-2021-1048",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-1048",
      "released": "2021-12-15T19:15:14Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.8.10-1",
      "fix": "DEBIAN-CVE-2021-1048",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-1048",
      "released": "2021-12-15T19:15:14Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}