CVE-2026-43051 (GCVE-0-2026-43051)
Vulnerability from cvelistv5
Published
2026-05-01 14:15
Modified
2026-05-03 05:46
Severity ?
8.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq The wacom_intuos_bt_irq() function processes Bluetooth HID reports without sufficient bounds checking. A maliciously crafted short report can trigger an out-of-bounds read when copying data into the wacom structure. Specifically, report 0x03 requires at least 22 bytes to safely read the processed data and battery status, while report 0x04 (which falls through to 0x03) requires 32 bytes. Add explicit length checks for these report IDs and log a warning if a short report is received.
References
Impacted products
Vendor Product Version
Linux Linux Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
Version: 78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/wacom_wac.c"
          ],
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          "vendor": "Linux",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
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            {
              "lessThanOrEqual": "6.6.*",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq\n\nThe wacom_intuos_bt_irq() function processes Bluetooth HID reports\nwithout sufficient bounds checking. A maliciously crafted short report\ncan trigger an out-of-bounds read when copying data into the wacom\nstructure.\n\nSpecifically, report 0x03 requires at least 22 bytes to safely read\nthe processed data and battery status, while report 0x04 (which\nfalls through to 0x03) requires 32 bytes.\n\nAdd explicit length checks for these report IDs and log a warning if\na short report is received."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-03T05:46:24.515Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b5b9730111808410e404ceac2fabd32eef92fbd"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa8901cb1f0b2113a342db93bd5684b59fe99dcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/8bd690ac1242332c73cba10dacdad6c6642bbb94"
        },
        {
          "url": "https://git.kernel.org/stable/c/41026bcc0fdf82605205c27935ef719cbc07193b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8dc23c97680eebefde06da5858aaef1b37cf75d"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d78386b144453c47e81bf62dc3601b757f02d99"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f1763f62909ccb6386ac50350fa0abbf5bb16a9"
        }
      ],
      "title": "HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43051",
    "datePublished": "2026-05-01T14:15:45.314Z",
    "dateReserved": "2026-05-01T14:12:55.980Z",
    "dateUpdated": "2026-05-03T05:46:24.515Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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