Input: byd - synchronize timer deletion before freeing private data

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80572
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 15:17:13 UTC
Updated2026-08-27 13:18:40 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Input: byd - synchronize timer deletion before freeing private data byd_disconnect() uses timer_delete() before freeing the driver's private data. This does not wait for a running byd_clear_touch() callback, which dereferences the private data and its psmouse pointer. A callback racing with disconnect can therefore access the private data after it has been freed. The timer can also still be re-armed by byd_process_byte() while the disconnect is in progress. Use timer_shutdown_sync() before freeing the private data: it waits for a running callback and turns any later re-arm attempt into a no-op.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 84b205297fa15f97510342221d8c9a0119711478 git Not specified
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 28d984a66b9e14be74986167b6ad40b5e0daf19a git Not specified
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 ee944a706a18322b4a2599eebe8040a2994e928f git Not specified
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 8dbfd8e32a13e116790780ed0be82b5a05eb9916 git Not specified
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 2e509ef60ee41a2da0deb062c262bb530143fb37 git Not specified
CNA Linux Linux affected 2d5f5611dd0de52e9a52b56391a7049a52184e72 c83e79c0842ed29860648bcce5022ef0ba5001c6 git Not specified
CNA Linux Linux affected 4.6 Not specified
CNA Linux Linux unaffected 4.6 semver Not specified
CNA Linux Linux unaffected 6.1.185 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.154 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.106 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.46 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.10 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/84b205297fa15f97510342221d8c9a0119711478 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/28d984a66b9e14be74986167b6ad40b5e0daf19a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ee944a706a18322b4a2599eebe8040a2994e928f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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