HID: wacom: Fix OOB write in wacom_hid_set_device_mode()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63916
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:09 UTC
Updated2026-07-20 15:16:55 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002100000 probability, percentile 0.113620000 (date 2026-07-20)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 2add311d99646c9d235b2c44f9c169ba30f5db3a git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 5716a293fb19d382ca2336e08fd28a619a5f3c25 git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 ed598de9f61582902406d352d99f2073d8e00298 git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 43e7c02d6090a82fd60d63491f6871aec906345e git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 b8338111e14183972359009c12d0dbd81d2e1e16 git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0 git Not specified
CNA Linux Linux affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 c0a8899e02ddebd51e2589835182c239c2e224ae git Not specified
CNA Linux Linux affected 3.18 Not specified
CNA Linux Linux unaffected 3.18 semver Not specified
CNA Linux Linux unaffected 5.10.259 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.210 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.176 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.143 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.93 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.35 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.12 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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