CVE-2026-63916 (GCVE-0-2026-63916)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-10-19 20:17
VLAI
Title
HID: wacom: Fix OOB write in wacom_hid_set_device_mode()
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: Fix OOB write in wacom_hid_set_device_mode() wacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE usage is always located in the first field (field[0]) of the feature report. However, a device can specify HID_DG_INPUTMODE in a different field. If HID_DG_INPUTMODE is in a field other than the first one and the first field has a report_count smaller than the usage_index of HID_DG_INPUTMODE, this leads to an out-of-bounds write to r->field[0]->value. Fix this by storing the field index of HID_DG_INPUTMODE in 'struct hid_data' during feature mapping. In wacom_hid_set_device_mode(), use this stored field index to access the correct field and add bounds checks to ensure both the field index and the value index are within valid ranges before writing.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:33 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6856 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < 2add311d99646c9d235b2c44f9c169ba30f5db3a (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < 5716a293fb19d382ca2336e08fd28a619a5f3c25 (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < ed598de9f61582902406d352d99f2073d8e00298 (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < 43e7c02d6090a82fd60d63491f6871aec906345e (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < b8338111e14183972359009c12d0dbd81d2e1e16 (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0 (git)
Affected: 5ae6e89f7409cb5d218bb728326eba9c650d9700 , < c0a8899e02ddebd51e2589835182c239c2e224ae (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.18
Unaffected: 0 , < 3.18 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.93 , ≤ 6.12.* (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-63916",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:33:16.082526Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T20:17:55.788Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/wacom_sys.c",
            "drivers/hid/wacom_wac.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2add311d99646c9d235b2c44f9c169ba30f5db3a",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "5716a293fb19d382ca2336e08fd28a619a5f3c25",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "ed598de9f61582902406d352d99f2073d8e00298",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "43e7c02d6090a82fd60d63491f6871aec906345e",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "b8338111e14183972359009c12d0dbd81d2e1e16",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "5db3fca0cec7b33bc5379411d0a60d792c9f9bc0",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            },
            {
              "lessThan": "c0a8899e02ddebd51e2589835182c239c2e224ae",
              "status": "affected",
              "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/wacom_sys.c",
            "drivers/hid/wacom_wac.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.18"
            },
            {
              "lessThan": "3.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.259",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.210",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.176",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.143",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.93",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: Fix OOB write in wacom_hid_set_device_mode()\n\nwacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE\nusage is always located in the first field (field[0]) of the feature report.\nHowever, a device can specify HID_DG_INPUTMODE in a different field.\n\nIf HID_DG_INPUTMODE is in a field other than the first one and the first\nfield has a report_count smaller than the usage_index of HID_DG_INPUTMODE,\nthis leads to an out-of-bounds write to r-\u003efield[0]-\u003evalue.\n\nFix this by storing the field index of HID_DG_INPUTMODE in \u0027struct\nhid_data\u0027 during feature mapping.  In wacom_hid_set_device_mode(), use\nthis stored field index to access the correct field and add bounds\nchecks to ensure both the field index and the value index are within\nvalid ranges before writing."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The bug is triggered when the kernel probes a Wacom HID device whose report descriptor is supplied by the peripheral; Bluetooth Wacom tablets are widely deployed and an attacker within radio range can present a malicious spoofed Wacom Bluetooth HID device, which is a more severe but reasonable reach path than USB-only scenarios.\nAC:L - The attacker fully controls the malicious device\u0027s HID report descriptor and can reliably place HID_DG_INPUTMODE in a non-first field with a high usage_index while keeping field[0]\u0027s report_count small, causing deterministic OOB write during driver initialization without race conditions or rare configuration.\nPR:N - Exploitation requires no privileges on the victim system; an attacker only needs to connect or spoof a malicious Wacom HID peripheral (USB plug-in or Bluetooth advertisement), with no login, capabilities, or user-namespace access required on the target host.\nUI:N - No victim interaction with applications or files is needed; the attacker can physically connect a USB device to an unattended machine or deliver a spoofed Bluetooth peripheral, and the kernel automatically parses the descriptor and calls the vulnerable function during device probe or resume.\nS:U - The out-of-bounds write corrupts kernel heap memory within the same kernel security boundary, enabling local privilege escalation or denial of service but not crossing a VM, IOMMU, or sandbox boundary.\nC:H - The out-of-bounds write to field[0]-\u003evalue can corrupt adjacent heap objects (new_value, usages_priorities, or neighboring kmalloc allocations), and such kernel heap memory corruption is reasonably exploitable for information disclosure.\nI:H - This is an out-of-bounds write in kernel heap memory with attacker-influenced offset and value (writes integer 2), which per CVSS kernel guidance constitutes high integrity impact due to potential arbitrary memory corruption and code execution.\nA:H - Corrupting kernel heap metadata or adjacent objects during device initialization can cause kernel oops, panic, or hang, and any out-of-bounds write in kernel space carries high availability impact even before full exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:37:10.495Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf"
        },
        {
          "url": "https://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298"
        },
        {
          "url": "https://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16"
        },
        {
          "url": "https://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae"
        }
      ],
      "title": "HID: wacom: Fix OOB write in wacom_hid_set_device_mode()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63916",
    "datePublished": "2026-07-19T14:55:20.015Z",
    "dateReserved": "2026-07-19T07:54:57.020Z",
    "dateUpdated": "2026-10-19T20:17:55.788Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63916",
      "date": "2026-10-21",
      "epss": "0.00354",
      "percentile": "0.27848"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hid/wacom_sys.c",
                  "drivers/hid/wacom_wac.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "2add311d99646c9d235b2c44f9c169ba30f5db3a",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5716a293fb19d382ca2336e08fd28a619a5f3c25",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ed598de9f61582902406d352d99f2073d8e00298",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "43e7c02d6090a82fd60d63491f6871aec906345e",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b8338111e14183972359009c12d0dbd81d2e1e16",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5db3fca0cec7b33bc5379411d0a60d792c9f9bc0",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c0a8899e02ddebd51e2589835182c239c2e224ae",
                    "status": "affected",
                    "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hid/wacom_sys.c",
                  "drivers/hid/wacom_wac.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.18"
                  },
                  {
                    "lessThan": "3.18",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.259",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.210",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.176",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.143",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.93",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.35",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.0.*",
                    "status": "unaffected",
                    "version": "7.0.12",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: Fix OOB write in wacom_hid_set_device_mode()\n\nwacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE\nusage is always located in the first field (field[0]) of the feature report.\nHowever, a device can specify HID_DG_INPUTMODE in a different field.\n\nIf HID_DG_INPUTMODE is in a field other than the first one and the first\nfield has a report_count smaller than the usage_index of HID_DG_INPUTMODE,\nthis leads to an out-of-bounds write to r-\u003efield[0]-\u003evalue.\n\nFix this by storing the field index of HID_DG_INPUTMODE in \u0027struct\nhid_data\u0027 during feature mapping.  In wacom_hid_set_device_mode(), use\nthis stored field index to access the correct field and add bounds\nchecks to ensure both the field index and the value index are within\nvalid ranges before writing."
          }
        ],
        "id": "CVE-2026-63916",
        "lastModified": "2026-10-19T21:17:10.757",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-63916",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:33:16.082526Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-07-19T16:17:09.657",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-05T14:21:19+00:00",
      "cve": "CVE-2026-63916",
      "id": "CVE-2026-63916",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: wacom: Fix OOB write in wacom_hid_set_device_mode()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63916.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-63916",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-16T15:33:16.082526Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-787",
                    "description": "CWE-787 Out-of-bounds Write",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-16T15:33:16.666Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/hid/wacom_sys.c",
                "drivers/hid/wacom_wac.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "2add311d99646c9d235b2c44f9c169ba30f5db3a",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "5716a293fb19d382ca2336e08fd28a619a5f3c25",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "ed598de9f61582902406d352d99f2073d8e00298",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "43e7c02d6090a82fd60d63491f6871aec906345e",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "b8338111e14183972359009c12d0dbd81d2e1e16",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "5db3fca0cec7b33bc5379411d0a60d792c9f9bc0",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                },
                {
                  "lessThan": "c0a8899e02ddebd51e2589835182c239c2e224ae",
                  "status": "affected",
                  "version": "5ae6e89f7409cb5d218bb728326eba9c650d9700",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/hid/wacom_sys.c",
                "drivers/hid/wacom_wac.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "3.18"
                },
                {
                  "lessThan": "3.18",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.259",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.210",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.176",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.143",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.93",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.18.*",
                  "status": "unaffected",
                  "version": "6.18.35",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "7.0.*",
                  "status": "unaffected",
                  "version": "7.0.12",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "7.1",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.259",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.210",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.176",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.143",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.93",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18.35",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.0.12",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.1",
                      "versionStartIncluding": "3.18",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: Fix OOB write in wacom_hid_set_device_mode()\n\nwacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE\nusage is always located in the first field (field[0]) of the feature report.\nHowever, a device can specify HID_DG_INPUTMODE in a different field.\n\nIf HID_DG_INPUTMODE is in a field other than the first one and the first\nfield has a report_count smaller than the usage_index of HID_DG_INPUTMODE,\nthis leads to an out-of-bounds write to r-\u003efield[0]-\u003evalue.\n\nFix this by storing the field index of HID_DG_INPUTMODE in \u0027struct\nhid_data\u0027 during feature mapping.  In wacom_hid_set_device_mode(), use\nthis stored field index to access the correct field and add bounds\nchecks to ensure both the field index and the value index are within\nvalid ranges before writing."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:A - The bug is triggered when the kernel probes a Wacom HID device whose report descriptor is supplied by the peripheral; Bluetooth Wacom tablets are widely deployed and an attacker within radio range can present a malicious spoofed Wacom Bluetooth HID device, which is a more severe but reasonable reach path than USB-only scenarios.\nAC:L - The attacker fully controls the malicious device\u0027s HID report descriptor and can reliably place HID_DG_INPUTMODE in a non-first field with a high usage_index while keeping field[0]\u0027s report_count small, causing deterministic OOB write during driver initialization without race conditions or rare configuration.\nPR:N - Exploitation requires no privileges on the victim system; an attacker only needs to connect or spoof a malicious Wacom HID peripheral (USB plug-in or Bluetooth advertisement), with no login, capabilities, or user-namespace access required on the target host.\nUI:N - No victim interaction with applications or files is needed; the attacker can physically connect a USB device to an unattended machine or deliver a spoofed Bluetooth peripheral, and the kernel automatically parses the descriptor and calls the vulnerable function during device probe or resume.\nS:U - The out-of-bounds write corrupts kernel heap memory within the same kernel security boundary, enabling local privilege escalation or denial of service but not crossing a VM, IOMMU, or sandbox boundary.\nC:H - The out-of-bounds write to field[0]-\u003evalue can corrupt adjacent heap objects (new_value, usages_priorities, or neighboring kmalloc allocations), and such kernel heap memory corruption is reasonably exploitable for information disclosure.\nI:H - This is an out-of-bounds write in kernel heap memory with attacker-influenced offset and value (writes integer 2), which per CVSS kernel guidance constitutes high integrity impact due to potential arbitrary memory corruption and code execution.\nA:H - Corrupting kernel heap metadata or adjacent objects during device initialization can cause kernel oops, panic, or hang, and any out-of-bounds write in kernel space carries high availability impact even before full exploitation."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T12:37:10.495Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a"
            },
            {
              "url": "https://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf"
            },
            {
              "url": "https://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25"
            },
            {
              "url": "https://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298"
            },
            {
              "url": "https://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e"
            },
            {
              "url": "https://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16"
            },
            {
              "url": "https://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0"
            },
            {
              "url": "https://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae"
            }
          ],
          "title": "HID: wacom: Fix OOB write in wacom_hid_set_device_mode()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2026-63916",
        "datePublished": "2026-07-19T14:55:20.015Z",
        "dateReserved": "2026-07-19T07:54:57.020Z",
        "dateUpdated": "2026-10-19T20:17:55.788Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.