{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-47141",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-47141"
  ],
  "published": "2025-01-11T12:27:13Z",
  "summary": "pinmux: Use sequential access to access desc->pinmux data",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npinmux: Use sequential access to access desc->pinmux data\n\nWhen two client of the same gpio call pinctrl_select_state() for the\nsame functionality, we are seeing NULL pointer issue while accessing\ndesc->mux_owner.\n\nLet's say two processes A, B executing in pin_request() for the same pin\nand process A updates the desc->mux_usecount but not yet updated the\ndesc->mux_owner while process B see the desc->mux_usecount which got\nupdated by A path and further executes strcmp and while accessing\ndesc->mux_owner it crashes with NULL pointer.\n\nSerialize the access to mux related setting with a mutex lock.\n\n\tcpu0 (process A)\t\t\tcpu1(process B)\n\npinctrl_select_state() {\t\t  pinctrl_select_state() {\n  pin_request() {\t\t\t\tpin_request() {\n  ...\n\t\t\t\t\t\t ....\n    } else {\n         desc->mux_usecount++;\n    \t\t\t\t\t\tdesc->mux_usecount && strcmp(desc->mux_owner, owner)) {\n\n         if (desc->mux_usecount > 1)\n               return 0;\n         desc->mux_owner = owner;\n\n  }\t\t\t\t\t\t}",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-47141"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2da32aed4a97ca1d70fb8b77926f72f30ce5fb4b"
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}