drm/xe/vf: Don't expose sysfs attributes not applicable for VFs

{
  "id": "37a72da4dfdf1e6346362f2ea77d10fadfa3e27a2396f6ffa3aea280de52b110",
  "url": "https://osv.dev/vulnerability/CVE-2025-40023",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/xe/vf: Don't expose sysfs attributes not applicable for VFs",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/xe/vf: Don't expose sysfs attributes not applicable for VFs VFs can't read BMG_PCIE_CAP(0x138340) register nor access PCODE (already guarded by the info.skip_pcode flag) so we shouldn't expose attributes that require any of them to avoid errors like: [] xe 0000:03:00.1: [drm] Tile0: GT0: VF is trying to read an \\ inaccessible register 0x138340+0x0 [] RIP: 0010:xe_gt_sriov_vf_read32+0x6c2/0x9a0 [xe] [] Call Trace: [] xe_mmio_read32+0x110/0x280 [xe] [] auto_link_downgrade_capable_show+0x2e/0x70 [xe] [] dev_attr_show+0x1a/0x70 [] sysfs_kf_seq_show+0xaa/0x120 [] kernfs_seq_show+0x41/0x60 (cherry picked from commit a2d6223d224f333f705ed8495bf8bebfbc585c35)",
    "evidence": "osv:CVE-2025-40023",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.16.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-40023",
      "aliases": [
        "CVE-2025-40023"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff"
                },
                {
                  "fixed": "bacbadedbba737da8ae6e0464bc0971c30cda4cb"
                },
                {
                  "fixed": "500dad428e5b0de4c1bdfa893822a6e06ddad0b5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40023.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.16.0"
                },
                {
                  "fixed": "6.16.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40023.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.859609501Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/500dad428e5b0de4c1bdfa893822a6e06ddad0b5",
        "https://git.kernel.org/stable/c/bacbadedbba737da8ae6e0464bc0971c30cda4cb",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40023.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40023",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40023.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40023",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490579,
  "published_at": "2025-10-24T12:24:58.554+00:00"
}