CVE-2026-98499

Memory disclosure via unchecked HID report offsets

Published Oct 18, 2026 · Updated Oct 18, 2026

An out-of-bounds read in the Linux Wacom HID driver allows attackers to read kernel memory via a crafted HID descriptor and report. The wacom_wac_pen_serial_enforce() function uses the descriptor's usage count rather than its report slot count to calculate extraction offsets, reading beyond the received buffer. Exposure requires attacker-controlled HID input to reach this driver path; extracted bytes reach userspace through MSC_SERIAL input events.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux Wacom HID driver allows attackers to read kernel memory via a crafted HID descriptor and report. The wacom_wac_pen_serial_enforce() function uses the descriptor's usage count rather than its report slot count to calculate extraction offsets, reading beyond the received buffer. Exposure requires attacker-controlled HID input to reach this driver path; extracted bytes reach userspace through MSC_SERIAL input events.

The record

CVE
CVE-2026-98499
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=4.16
  2. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <26471d954bbfbfb9032994f7f485802ee20e0582
  3. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <456afe4707e23cc114ad833197f63b52bb8fd1e7
  4. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <4b09b7c84b8633cd041181616bd15bf5e73c164d
  5. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <65e7c4b5366b770c60dfefac3f1d06e33a9e411e
  6. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <9aa237cf66495b2426ddde8532e9b08a0ed83aaa
  7. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51
  8. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <c3129e6f26e18c0886ede7265f187a7ec289e1d1
  9. Affected versionversion=83417206427bdf0fef9fa69957807194f25923c3 <eaa7d29341ef4b91e84ad097562982288a7c376c

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.16; version=83417206427bdf0fef9fa69957807194f25923c3 <26471d954bbfbfb9032994f7f485802ee20e0582; version=83417206427bdf0fef9fa69957807194f25923c3 <456afe4707e23cc114ad833197f63b52bb8fd1e7; version=83417206427bdf0fef9fa69957807194f25923c3 <4b09b7c84b8633cd041181616bd15bf5e73c164d; version=83417206427bdf0fef9fa69957807194f25923c3 <65e7c4b5366b770c60dfefac3f1d06e33a9e411e; version=83417206427bdf0fef9fa69957807194f25923c3 <9aa237cf66495b2426ddde8532e9b08a0ed83aaa; version=83417206427bdf0fef9fa69957807194f25923c3 <9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51; version=83417206427bdf0fef9fa69957807194f25923c3 <c3129e6f26e18c0886ede7265f187a7ec289e1d1; version=83417206427bdf0fef9fa69957807194f25923c3 <eaa7d29341ef4b91e84ad097562982288a7c376c

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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