CVE-2026-98499HID: wacom: fix OOB read in wacom_wac_pen_serial_enforce()
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | 83417206427bdf0fef9fa69957807194f25923c3 builds before 9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51; 83417206427bdf0fef9fa69957807194f25923c3 builds before 26471d954bbfbfb9032994f7f485802ee20e0582; 83417206427bdf0fef9fa69957807194f25923c3 builds before 456afe4707e23cc114ad833197f63b52bb8fd1e7; 83417206427bdf0fef9fa69957807194f25923c3 builds before 65e7c4b5366b770c60dfefac3f1d06e33a9e411e; from 83417206427bdf0fef9fa69957807194f25923c3 before eaa7d29341ef4b91e84ad097562982288a7c376c; from 83417206427bdf0fef9fa69957807194f25923c3 before c3129e6f26e18c0886ede7265f187a7ec289e1d1; 83417206427bdf0fef9fa69957807194f25923c3 builds before 4b09b7c84b8633cd041181616bd15bf5e73c164d; 83417206427bdf0fef9fa69957807194f25923c3 builds before 9aa237cf66495b2426ddde8532e9b08a0ed83aaa | CNA record |
References
- https://git.kernel.org/stable/c/9aa62f967b6a4bb30aa3b778e02c8a5ca6bcde51
- https://git.kernel.org/stable/c/26471d954bbfbfb9032994f7f485802ee20e0582
- https://git.kernel.org/stable/c/456afe4707e23cc114ad833197f63b52bb8fd1e7
- https://git.kernel.org/stable/c/65e7c4b5366b770c60dfefac3f1d06e33a9e411e
- https://git.kernel.org/stable/c/eaa7d29341ef4b91e84ad097562982288a7c376c
- https://git.kernel.org/stable/c/c3129e6f26e18c0886ede7265f187a7ec289e1d1
- https://git.kernel.org/stable/c/4b09b7c84b8633cd041181616bd15bf5e73c164d
- https://git.kernel.org/stable/c/9aa237cf66495b2426ddde8532e9b08a0ed83aaa
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.