pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init

{
  "id": "ca8e20dbe35d3d2176bc662440df51a7e7df4cf76d1c1eeb63938a19906eb897",
  "url": "https://osv.dev/vulnerability/CVE-2026-53344",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init Regmap initialization triggers regcache_maple_populate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without them, NULL pointer dereference occurs during probe. Move initialization before mcp23s08_spi_regmap_init() call.",
    "evidence": "osv:CVE-2026-53344",
    "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-2026-53344",
      "aliases": [
        "CVE-2026-53344"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f9f4fda15e720686f1b2b436591ab11255e4e85e"
                },
                {
                  "fixed": "3a13bb9540dfd7014c5601608afcbbadbbcfd673"
                },
                {
                  "fixed": "8473c3a197b57ff01396f7a2ec6ddf65383820d4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53344.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-2026-53344.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.007536092Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3a13bb9540dfd7014c5601608afcbbadbbcfd673",
        "https://git.kernel.org/stable/c/8473c3a197b57ff01396f7a2ec6ddf65383820d4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53344.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53344",
        "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-2026-53344.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53344",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 515901,
  "published_at": "2026-07-01T13:32:24.546+00:00"
}