{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d98dfad35c38c037b37c4adc99df01da571031a5"
            },
            {
              "fixed": "d0593e15fdeb56048a72c5c6e720f702759d0ccd"
            },
            {
              "fixed": "17cee2f59029039416e8f6303050038eb59ba149"
            },
            {
              "fixed": "299efd14c2eda7e5fd40025e54addd4151a01081"
            },
            {
              "fixed": "4d1da9a6be5a8156c532d571c2ed237169f99244"
            },
            {
              "fixed": "b96c7f0bc0713dc6403912f6527d4ff9168d6fe6"
            },
            {
              "fixed": "fa7ca363069a70b0d1aa51e8892e3095fe2ac1ec"
            },
            {
              "fixed": "2aef8f08c479f4cbc83e1e6b19d1c94d4dd24f17"
            },
            {
              "fixed": "d7834d92251baade796812876e95555e2066fa9f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64084.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus/adm1266) cap PDIO scan in get_multiple at ADM1266_PDIO_NR\n\nadm1266_gpio_get_multiple() iterates the PDIO portion of the\ncaller-supplied mask using\n\n\tfor_each_set_bit_from(gpio_nr, mask,\n\t\t\t      ADM1266_GPIO_NR + ADM1266_PDIO_STATUS) {\n\t\t...\n\t}\n\nwhere ADM1266_PDIO_STATUS is the PMBus command code (0xE9, i.e. 233),\nnot the number of PDIO pins.  The intended upper bound is\nADM1266_GPIO_NR + ADM1266_PDIO_NR = 25.\n\ngpiolib hands in a mask sized for gc.ngpio (= 25 bits on this chip),\nso the iteration walks find_next_bit() up to 242, reading up to 217\nextra bits (a handful of unsigned-long words: four on 64-bit, seven\non 32-bit) of whatever lives past the end of the mask in the\ncaller's stack.  Any incidental set bit in that range then drives a\nset_bit(gpio_nr, bits) call that writes past the end of the\ncaller-supplied bits array too -- both out-of-bounds.\n\nSubstitute ADM1266_PDIO_NR for the constant so the scan stops at the\nlast real PDIO bit.",
  "id": "CVE-2026-64084",
  "modified": "2026-07-22T05:29:47.875356117Z",
  "published": "2026-07-19T15:39:55.417Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17cee2f59029039416e8f6303050038eb59ba149"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/299efd14c2eda7e5fd40025e54addd4151a01081"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2aef8f08c479f4cbc83e1e6b19d1c94d4dd24f17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d1da9a6be5a8156c532d571c2ed237169f99244"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b96c7f0bc0713dc6403912f6527d4ff9168d6fe6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0593e15fdeb56048a72c5c6e720f702759d0ccd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7834d92251baade796812876e95555e2066fa9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa7ca363069a70b0d1aa51e8892e3095fe2ac1ec"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64084.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64084"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "hwmon: (pmbus/adm1266) cap PDIO scan in get_multiple at ADM1266_PDIO_NR"
}