In 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.

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History

Wed, 26 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
CWE-416

Wed, 26 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
Description In 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.
Title Input: byd - synchronize timer deletion before freeing private data
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-26T14:37:33.141Z

Reserved: 2026-08-26T14:34:25.768Z

Link: CVE-2026-80572

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-26T15:17:13.140

Modified: 2026-08-26T15:17:13.140

Link: CVE-2026-80572

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T18:15:08Z

Weaknesses