{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise  When user provides a bogus pat_index value through the madvise IOCTL, the xe_pat_index_get_coh_mode() function performs an array access without validating bounds. This allows a malicious user to trigger an out-of-bounds kernel read from the xe-\u003epat.table array.  The vulnerability exists because the validation in madvise_args_are_sane() directly calls xe_pat_index_get_coh_mode(xe, args-\u003epat_index.val) without first checking if pat_index is within [0, xe-\u003epat.n_entries).  Although xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug builds, it still performs the unsafe array access in production kernels.  v2(Matthew Auld) - Using array_index_nospec() to mitigate spectre attacks when the value is used  v3(Matthew Auld) - Put the declarations at the start of the block  (cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)",
  "id": "DEBIAN-CVE-2026-43280",
  "modified": "2026-09-14T16:47:38.614007745Z",
  "published": "2026-05-06T12:16:49.477Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-43280"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-43280"
  ]
}