accel/ethosu: reject NPU_OP_RESIZE commands from userspace

{
  "id": "5c354d465e0f214e31eda7b4809632fce533f007816364860fd6f515da2886cd",
  "url": "https://osv.dev/vulnerability/CVE-2026-53169",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "accel/ethosu: reject NPU_OP_RESIZE commands from userspace",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: accel/ethosu: reject NPU_OP_RESIZE commands from userspace NPU_OP_RESIZE is a U85-only command that the driver does not yet implement. The existing WARN_ON(1) placeholder fires unconditionally whenever userspace submits this command via DRM_IOCTL_ETHOSU_GEM_CREATE, causing unbounded kernel log spam. If panic_on_warn is set the kernel panics, giving any unprivileged user with access to the DRM device a trivial denial-of-service primitive. Replace the WARN_ON(1) with an explicit -EINVAL return so the ioctl rejects the command before it reaches hardware.",
    "evidence": "osv:CVE-2026-53169",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.0.13",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-53169",
      "aliases": [
        "CVE-2026-53169"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b"
                },
                {
                  "fixed": "70090a32f56a4589e7e860e0f9a8fbe4417df0a1"
                },
                {
                  "fixed": "ef911805d86a05363d3ec2fa9835a41def83bb7e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53169.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.13"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53169.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.626096833Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/70090a32f56a4589e7e860e0f9a8fbe4417df0a1",
        "https://git.kernel.org/stable/c/ef911805d86a05363d3ec2fa9835a41def83bb7e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53169.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53169",
        "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/2026/53xxx/CVE-2026-53169.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53169",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 513532,
  "published_at": "2026-06-25T08:38:48.068+00:00"
}