CVE-2026-98499HID: wacom: fix OOB read in wacom_wac_pen_serial_enforce()
- 8.1HighCVSS base score
- 0.39%Exploitation in 30 daysEPSS · top 66% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix OOB read in wacom_wac_pen_serial_enforce() The 'wacom_wac_pen_serial_enforce()' function may calculate and pass an invalid offset to hid_field_extract(), resulting in memory reads at incorrect addresses -- possibly beyond the end of the report. If a field in the HID descriptor lists more usages than its Report Count actually reserves space for, the function's inner 'j' will walk past the end of the field: for (i = 0; i < report->maxfield; i++) { for (j = 0; j < report->field[i]->maxusage; j++) { ... value = hid_field_extract(hdev, raw_data + 1, offset + j * size, size); A descriptor listing 12288 usages against Report Count 1 has the loop extract the usage at index 12287 from bit offset 98296 -- about 12 KB past a 2-byte received report. The value is stored in wacom_wac->serial[0] and can reach userspace as an MSC_SERIAL event, making this an information disclosure. Clamp the loop to field->report_count, the number of value slots the report holds. Value slots past the last declared usage are still scanned; they reuse that usage (HID 1.11, 6.2.2.8). Verified on v6.12.105 with a UHID reproducer: a 2-byte report from such a descriptor trips KASAN before the patch and not after it.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 6 days later
· 6 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.39% · top 66% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 26471d954bbfbfb9032994f7f485802ee20e0582
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 456afe4707e23cc114ad833197f63b52bb8fd1e7
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 65e7c4b5366b770c60dfefac3f1d06e33a9e411e
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < eaa7d29341ef4b91e84ad097562982288a7c376c
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < c3129e6f26e18c0886ede7265f187a7ec289e1d1
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 4b09b7c84b8633cd041181616bd15bf5e73c164d
- affected 83417206427bdf0fef9fa69957807194f25923c3 – < 9aa237cf66495b2426ddde8532e9b08a0ed83aaa
- affected 4.16
- unaffected < 4.16
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51 (opens in a new tab)
- https://git.kernel.org/stable/c/26471d954bbfbfb9032994f7f485802ee20e0582 (opens in a new tab)
- https://git.kernel.org/stable/c/456afe4707e23cc114ad833197f63b52bb8fd1e7 (opens in a new tab)
- https://git.kernel.org/stable/c/65e7c4b5366b770c60dfefac3f1d06e33a9e411e (opens in a new tab)
- https://git.kernel.org/stable/c/eaa7d29341ef4b91e84ad097562982288a7c376c (opens in a new tab)
- https://git.kernel.org/stable/c/c3129e6f26e18c0886ede7265f187a7ec289e1d1 (opens in a new tab)
- https://git.kernel.org/stable/c/4b09b7c84b8633cd041181616bd15bf5e73c164d (opens in a new tab)
- https://git.kernel.org/stable/c/9aa237cf66495b2426ddde8532e9b08a0ed83aaa (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103739 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98499)Record last updated .