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HID: wacom: validate report length in wacom_intuos_pro2_bt_irq

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: HID: wacom: validate report length in wacom_intuos_pro2_bt_irq wacom_intuos_pro2_bt_irq() receives the wire report length in `len` but never consults it before parsing. After the report-id gate it unconditionally calls wacom_intuos_pro2_bt_pen() and then, selected by features.type, a fixed chain of sub-parsers, none of which receive `len`: wacom_intuos_pro2_bt_pen(wacom); if (type == INTUOSP2_BT || type == INTUOSP2S_BT) { wacom_intuos_pro2_bt_touch(wacom); wacom_intuos_pro2_bt_pad(wacom); wacom_intuos_pro2_bt_battery(wacom); } else { wacom_intuos_gen3_bt_pad(wacom); wacom_intuos_gen3_bt_battery(wacom); } Each sub-parser dereferences wacom->data at fixed offsets. The furthest byte touched on each branch is: INTUOSP2_BT / INTUOSP2S_BT: wacom_intuos_pro2_bt_pad() reads data[285] (the touchring byte), so the report must be at least 286 bytes; INTUOSHT3_BT ("gen3"): wacom_intuos_gen3_bt_battery() reads data[45], so the report must be at least 46 bytes. features.type is selected from the VID/PID id_table entry and wacom_setup_device_quirks() force-registers the pen/pad/touch inputs for that type independent of the report descriptor, so a malicious or malfunctioning paired/spoofed Bluetooth peripheral can advertise that VID/PID and send an undersized report that still satisfies the data[0] == 0x80/0x81 gate. The driver then reads past the received report and forwards the bytes to userspace via evdev (MSC_SERIAL / AB

Announced Source revision 1
Original source ↗

CVE-2026-89999

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89999

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "d2844f3fcd058113acbe0aa110ab13ef28b98d9f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "1bfc0547b81d5861443420d19b5ed2fd533cd17f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "84781a1f3c5dc6650480be9329e6e8528939eaa0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "96dd0af7597aba2d80cc97e2f66e8b72d30ba125",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "114af803e409a68e52516810ecd24df4d8ce0c68",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "74ec08f7b81c2726578039ca6dea0fec136c38ea",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "0cdc6cb242dd8d2731956fdf3390de094482a4b2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
        "lessThan": "a8e04f3f894ccb52cfcd7e60125a9f35da4a616d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/hid/wacom_wac.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.11"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.11",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/hid/wacom_wac.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89999

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36432 · Revision 1
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Publisher date
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