{
  "fix": "grub-efi-amd64-bin 2.06-2ubuntu14.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-grub-efi-amd64-bin-2.06-2ubuntu14.1",
  "summary": "grub-efi-amd64-bin 2.06-2ubuntu14.1, released July 19, 2023, fixes 9 CVEs in grub-efi-amd64-bin. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "package",
  "title": "grub-efi-amd64-bin 2.06-2ubuntu14.1 for Ubuntu 22.04.1 LTS (jammy)",
  "released": "2023-07-19T18:15:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2022-28733, high severity",
  "supported": true,
  "cveCount": 9,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01273,
  "maxCvss": 8.6,
  "appliesTo": [
    {
      "product": "grub-efi-amd64-bin",
      "productUrl": "https://patchblox.com/security/product/linux/grub-efi-amd64-bin",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.06-2ubuntu14.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2022-28733",
      "url": "https://patchblox.com/security/cve/CVE-2022-28733",
      "title": "grub-efi-amd64: Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in gru...",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.01273,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-28734",
      "url": "https://patchblox.com/security/cve/CVE-2022-28734",
      "title": "kernel-uek: ELSA-2025-20480: Unbreakable Enterprise kernel security update (IMPORTANT)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.01121,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-2601",
      "url": "https://patchblox.com/security/cve/CVE-2022-2601",
      "title": "Redhat: CVE-2022-2601 grub2 - Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass",
      "priority": "High",
      "severity": "MODERATE",
      "cvss": 8.6,
      "epss": 0.00515,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3696",
      "url": "https://patchblox.com/security/cve/CVE-2021-3696",
      "title": "kernel-uek: ELSA-2025-20480: Unbreakable Enterprise kernel security update (IMPORTANT)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.00484,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3695",
      "url": "https://patchblox.com/security/cve/CVE-2021-3695",
      "title": "kernel-uek: ELSA-2025-20480: Unbreakable Enterprise kernel security update (IMPORTANT)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3697",
      "url": "https://patchblox.com/security/cve/CVE-2021-3697",
      "title": "kernel-uek: ELSA-2025-20480: Unbreakable Enterprise kernel security update (IMPORTANT)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.00469,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-28735",
      "url": "https://patchblox.com/security/cve/CVE-2022-28735",
      "title": "grub-efi-arm64: The GRUB2\u0027s shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00316,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-28736",
      "url": "https://patchblox.com/security/cve/CVE-2022-28736",
      "title": "grub-efi-arm64: There\u0027s a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up...",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.00286,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3981",
      "url": "https://patchblox.com/security/cve/CVE-2021-3981",
      "title": "grub2-common: (Incorrect read permission in grub.cfg)",
      "priority": "Routine",
      "severity": "LOW",
      "cvss": 3.3,
      "epss": 0.00319,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-13T08:00:37Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}