CVE-2026-89999

Kernel-buffer disclosure via unchecked Bluetooth report length

Published Sep 16, 2026 · Updated Sep 16, 2026

Out-of-bounds read in the Linux Wacom HID driver allows physically proximate attackers to disclose kernel-buffer data via short Bluetooth reports. wacom_intuos_pro2_bt_irq ignores len and invokes fixed-offset parsers that read through data[285] or data[45], then forwards resulting values through evdev. Exploitation requires a paired or spoofed Bluetooth peripheral advertising a matching VID/PID and sending report 0x80 or 0x81 below the branch minimum.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Out-of-bounds read in the Linux Wacom HID driver allows physically proximate attackers to disclose kernel-buffer data via short Bluetooth reports. wacom_intuos_pro2_bt_irq ignores len and invokes fixed-offset parsers that read through data[285] or data[45], then forwards resulting values through evdev. Exploitation requires a paired or spoofed Bluetooth peripheral advertising a matching VID/PID and sending report 0x80 or 0x81 below the branch minimum.

The record

CVE
CVE-2026-89999
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.11
  2. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <0cdc6cb242dd8d2731956fdf3390de094482a4b2
  3. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <114af803e409a68e52516810ecd24df4d8ce0c68
  4. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <1bfc0547b81d5861443420d19b5ed2fd533cd17f
  5. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <74ec08f7b81c2726578039ca6dea0fec136c38ea
  6. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <84781a1f3c5dc6650480be9329e6e8528939eaa0
  7. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <96dd0af7597aba2d80cc97e2f66e8b72d30ba125
  8. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <a8e04f3f894ccb52cfcd7e60125a9f35da4a616d
  9. Affected versionversion=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <d2844f3fcd058113acbe0aa110ab13ef28b98d9f

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.11; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <0cdc6cb242dd8d2731956fdf3390de094482a4b2; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <114af803e409a68e52516810ecd24df4d8ce0c68; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <1bfc0547b81d5861443420d19b5ed2fd533cd17f; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <74ec08f7b81c2726578039ca6dea0fec136c38ea; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <84781a1f3c5dc6650480be9329e6e8528939eaa0; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <96dd0af7597aba2d80cc97e2f66e8b72d30ba125; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <a8e04f3f894ccb52cfcd7e60125a9f35da4a616d; version=4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b <d2844f3fcd058113acbe0aa110ab13ef28b98d9f

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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