{
  "cveId": "CVE-2022-49886",
  "url": "https://patchblox.com/security/cve/CVE-2022-49886",
  "summary": "CVE-2022-49886 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49886, released May 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  x86/tdx: Panic on bad configs that #VE on \u0022priva...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  x86/tdx: Panic on bad configs that #VE on \u0022private\u0022 memory access  All normal kernel memory is \u0022TDX private memory\u0022.  This includes everything from kernel stacks to kernel text.  Handling exceptions on arbitrary accesses to kernel memory is essentially impossible because they can happen in horribly nasty places like kernel entry/exit.  But, TDX hardware can theoretically _deliver_ a virtualization exception (#VE) on any access to private memory.  But, it\u0027s not as bad as it sounds.  TDX can be configured to never deliver these exceptions on private memory with a \u0022TD attribute\u0022 called ATTR_SEPT_VE_DISABLE.  The guest has no way to *set* this attribute, but it can check it.  Ensure ATTR_SEPT_VE_DISABLE is set in early boot.  panic() if it is unset.  There is no sane way for Linux to run with this attribute clear so a panic() is appropriate.  There\u0027s small window during boot before the check where kernel has an early #VE handler. But the handler is only for port I/O and will also panic() as soon as it sees any other #VE, such as a one generated by a private memory access.  [ dhansen: Rewrite changelog and rebase on new tdx_parse_tdinfo(). \t   Add Kirill\u0027s tested-by because I made changes since \t   he wrote this. ]",
  "published": "2025-05-01T15:16:13Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00181,
  "epssPercentile": 0.07761,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.8-1",
      "fix": "DEBIAN-CVE-2022-49886",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49886",
      "released": "2025-05-01T15:16:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.8-1",
      "fix": "DEBIAN-CVE-2022-49886",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49886",
      "released": "2025-05-01T15:16:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.8-1",
      "fix": "DEBIAN-CVE-2022-49886",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49886",
      "released": "2025-05-01T15:16:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}