CVE-2026-53344 (GCVE-0-2026-53344)

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-07-01 13:32
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f9f4fda15e720686f1b2b436591ab11255e4e85e , < 3a13bb9540dfd7014c5601608afcbbadbbcfd673 (git)
Affected: f9f4fda15e720686f1b2b436591ab11255e4e85e , < 8473c3a197b57ff01396f7a2ec6ddf65383820d4 (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/pinctrl/pinctrl-mcp23s08_spi.c"
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                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
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          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-01T13:32:24.546Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/3a13bb9540dfd7014c5601608afcbbadbbcfd673"
        },
        {
          "url": "https://git.kernel.org/stable/c/8473c3a197b57ff01396f7a2ec6ddf65383820d4"
        }
      ],
      "title": "pinctrl: mcp23s08: Initialize mcp-\u003edev and mcp-\u003eaddr before regmap init",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53344",
    "datePublished": "2026-07-01T13:32:24.546Z",
    "dateReserved": "2026-06-09T07:44:35.399Z",
    "dateUpdated": "2026-07-01T13:32:24.546Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-07-02",
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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