{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  drm/xe/guc: Fix buffer overflow in steered register list allocation  The size calculation for the steered register extarray uses only the geometry DSS mask (g_dss_mask) to determine the number of entries to allocate:    total = bitmap_weight(gt-\u003efuse_topo.g_dss_mask, ...) * steer_reg_num;  However, the filling loop uses for_each_dss_steering(), which iterates over for_each_dss(), defined as the union of g_dss_mask and c_dss_mask (geometry + compute DSS). On platforms with compute-only DSS bits, the loop writes past the allocated buffer, corrupting adjacent slab objects.  This manifests as list_del corruption and SLUB redzone overwrites during drm_managed_release on device unbind, since the overflow corrupts the drmres list_head of neighboring allocations.  Fix by computing the allocation size using the union of both DSS masks, matching the iteration pattern of for_each_dss_steering().  -- v2: - use bitmap_weighted_or() (Zhanjun)  (cherry picked from commit 0a78a44f4901aa6c9263e66be7fce02282f1109f)",
  "id": "DEBIAN-CVE-2026-68274",
  "modified": "2026-09-14T16:47:43.786336621Z",
  "published": "2026-08-10T13:20:16.467Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-68274"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-68274"
  ]
}