CVE-2026-63916HID: wacom: Fix OOB write in wacom_hid_set_device_mode()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: HID: wacom: Fix OOB write in wacom_hid_set_device_mode() wacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE usage is always located in the first field (field[0]) of the feature report. However, a device can specify HID_DG_INPUTMODE in a different field. If HID_DG_INPUTMODE is in a field other than the first one and the first field has a report_count smaller than the usage_index of HID_DG_INPUTMODE, this leads to an out-of-bounds write to r->field[0]->value. Fix this by storing the field index of HID_DG_INPUTMODE in 'struct hid_data' during feature mapping. In wacom_hid_set_device_mode(), use this stored field index to access the correct field and add bounds checks to ensure both the field index and the value index are within valid ranges before writing.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- 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
- Awaiting Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 5ae6e89f7409cb5d218bb728326eba9c650d9700 builds before 2add311d99646c9d235b2c44f9c169ba30f5db3a; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before 5716a293fb19d382ca2336e08fd28a619a5f3c25; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before ed598de9f61582902406d352d99f2073d8e00298; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before 43e7c02d6090a82fd60d63491f6871aec906345e; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before b8338111e14183972359009c12d0dbd81d2e1e16; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0; from 5ae6e89f7409cb5d218bb728326eba9c650d9700 before c0a8899e02ddebd51e2589835182c239c2e224ae | CNA record |
References
- https://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a
- https://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf
- https://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25
- https://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298
- https://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e
- https://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16
- https://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0
- https://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae
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.