{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2ffcda1629012a2c1a3706432bc45fdc899a584"
            },
            {
              "fixed": "a6402808e552e44e9c26a9fe8395ac11703d5800"
            },
            {
              "fixed": "86df6499dfd232fbc1c82c0d6eb9322ca67b8cd0"
            },
            {
              "fixed": "eace3b3e729d5ba11794d69acfafb58a7950217c"
            },
            {
              "fixed": "c085d82613d5618814b84406c8b2d64f1bc305e7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.8.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64603.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: intel-hid: Protect ACPI notify handler against recursion\n\nSince commit e2ffcda16290 (\"ACPI: OSL: Allow Notify () handlers to run on\nall CPUs\") ACPI notify handlers like the intel-hid notify_handler() may\nrun on multiple CPU cores racing with themselves.\n\nOn convertibles and detachables (matched by DMI chassis-type 31 and 32 in\ndmi_auto_add_switch[]) the SW_TABLET_MODE input device is registered\nlazily from notify_handler() on the first tablet-mode event, via\nintel_hid_switches_setup(). When two such events race on different CPUs\nboth can pass the !priv-\u003eswitches check and register the priv-\u003eswitches\ninput device twice, resulting in a duplicate sysfs entry and a subsequent\nNULL pointer dereference.\n\nThis is the same class of bug fixed by commit e075c3b13a0a (\"platform/x86:\nintel-vbtn: Protect ACPI notify handler against recursion\") for the\nsibling intel-vbtn driver.\n\nProtect intel-hid notify_handler() from racing with itself with a mutex\nto fix this.",
  "id": "CVE-2026-64603",
  "modified": "2026-08-08T03:30:21.990099736Z",
  "published": "2026-08-06T07:13:55.114Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86df6499dfd232fbc1c82c0d6eb9322ca67b8cd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6402808e552e44e9c26a9fe8395ac11703d5800"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c085d82613d5618814b84406c8b2d64f1bc305e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eace3b3e729d5ba11794d69acfafb58a7950217c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64603.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64603"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "platform/x86: intel-hid: Protect ACPI notify handler against recursion"
}