CVE-2026-80572: Linux

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux: from 4.6, before 6.1.185 (fixed in 6.1.185); from 6.2, before 6.6.154 (fixed in 6.6.154); from 6.7, before 6.12.106 (fixed in 6.12.106); from 6.13, before 6.18.46 (fixed in 6.18.46); from 6.19, before 7.1.10 (fixed in 7.1.10)

Published 2026-08-26. Last modified 2026-08-27.