{
  "cveId": "CVE-2026-68274",
  "url": "https://patchblox.com/security/cve/CVE-2026-68274",
  "summary": "CVE-2026-68274 is fixed in linux on 1 platform by DEBIAN-CVE-2026-68274 (version 7.1.6-1), released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/xe/guc: Fix buffer overflow in steered regis...",
  "description": "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 \u002B 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)",
  "published": "2026-08-10T13:20:16Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00151,
  "epssPercentile": 0.04305,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.6-1",
      "fix": "DEBIAN-CVE-2026-68274",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-68274",
      "released": "2026-08-11T16:03:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}