{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f9f4fda15e720686f1b2b436591ab11255e4e85e"
            },
            {
              "fixed": "3a13bb9540dfd7014c5601608afcbbadbbcfd673"
            },
            {
              "fixed": "8473c3a197b57ff01396f7a2ec6ddf65383820d4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53344.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: mcp23s08: Initialize mcp-\u003edev and mcp-\u003eaddr before regmap init\n\nRegmap initialization triggers regcache_maple_populate() which attempts\nSPI read to populate cache. SPI read requires mcp-\u003edev and mcp-\u003eaddr to\nbe set, without them, NULL pointer dereference occurs during probe.\n\nMove initialization before mcp23s08_spi_regmap_init() call.",
  "id": "CVE-2026-53344",
  "modified": "2026-08-12T03:51:24.353575264Z",
  "published": "2026-07-01T13:32:24.546Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a13bb9540dfd7014c5601608afcbbadbbcfd673"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8473c3a197b57ff01396f7a2ec6ddf65383820d4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53344.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53344"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "pinctrl: mcp23s08: Initialize mcp-\u003edev and mcp-\u003eaddr before regmap init"
}