{
  "cveId": "CVE-2024-56738",
  "url": "https://patchblox.com/security/cve/CVE-2024-56738",
  "summary": "CVE-2024-56738 is fixed in grub2 on 1 platform, first by SUSE-SU-2025:02772-1, released August 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.",
  "description": "This update for grub2 fixes the following issues:\n\n- CVE-2024-56738: Fixed side-channel attack due to not \n  constant-time algorithm in grub_crypto_memcmp (bsc#1234959)\n\nOther fixes:\n- Fix test -f and -s do not work properly over the network files \n  served via tftp and http (bsc#1246157, bsc#1246237)\n- Skip mount point in grub_find_device function (bsc#1246231)",
  "published": "2025-08-12T17:35:34Z",
  "severity": "Moderate",
  "cvss": 6.7,
  "cwe": "Observable Timing Discrepancy",
  "epss": 0.00405,
  "epssPercentile": 0.35,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-56738",
  "fixes": [
    {
      "platform": "linux",
      "product": "grub2",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "2.12-150600.8.34.1",
      "fix": "SUSE-SU-2025:02772-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-02772-1",
      "released": "2025-08-12T17:35:34Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.12-160000.3.1",
      "fix": "OPENSUSE-SU-2025:20163-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20163-1",
      "released": "2025-12-15T12:52:50Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 15.6",
      "fixedVersion": "2.12-150600.8.34.1",
      "fix": "SUSE-SU-2025:02772-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-02772-1",
      "released": "2025-08-12T17:35:34Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 15.7",
      "fixedVersion": "2.12-150700.19.13.2",
      "fix": "SUSE-SU-2025:02813-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-02813-1",
      "released": "2025-08-15T12:53:14Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 16.0",
      "fixedVersion": "2.12-160000.3.1",
      "fix": "SUSE-SU-2025:21212-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-21212-1",
      "released": "2025-12-15T12:49:56Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}