{
  "cveId": "CVE-2022-48707",
  "url": "https://patchblox.com/security/cve/CVE-2022-48707",
  "summary": "CVE-2022-48707 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48707, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  cxl/region: Fix null pointer dereference for res...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  cxl/region: Fix null pointer dereference for resetting decoder  Not all decoders have a reset callback.  The CXL specification allows a host bridge with a single root port to have no explicit HDM decoders. Currently the region driver assumes there are none.  As such the CXL core creates a special pass through decoder instance without a commit/reset callback.  Prior to this patch, the -\u003Ereset() callback was called unconditionally when calling cxl_region_decode_reset. Thus a configuration with 1 Host Bridge, 1 Root Port, and one directly attached CXL type 3 device or multiple CXL type 3 devices attached to downstream ports of a switch can cause a null pointer dereference.  Before the fix, a kernel crash was observed when we destroy the region, and a pass through decoder is reset.  The issue can be reproduced as below,     1) create a region with a CXL setup which includes a HB with a     single root port under which a memdev is attached directly.     2) destroy the region with cxl destroy-region regionX -f.",
  "published": "2024-05-21T16:15:12Z",
  "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": 0.00205,
  "epssPercentile": 0.10588,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.12-1",
      "fix": "DEBIAN-CVE-2022-48707",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48707",
      "released": "2024-05-21T16:15:12Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.12-1",
      "fix": "DEBIAN-CVE-2022-48707",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48707",
      "released": "2024-05-21T16:15:12Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.12-1",
      "fix": "DEBIAN-CVE-2022-48707",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48707",
      "released": "2024-05-21T16:15:12Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}