CVE-2026-80572
Last modified
CVE-2026-80572 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.
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.
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < 84b205297fa15f97510342221d8c9a0119711478; >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < 28d984a66b9e14be74986167b6ad40b5e0daf19a; >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < ee944a706a18322b4a2599eebe8040a2994e928f; >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < 8dbfd8e32a13e116790780ed0be82b5a05eb9916; >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < 2e509ef60ee41a2da0deb062c262bb530143fb37; >= 2d5f5611dd0de52e9a52b56391a7049a52184e72, < c83e79c0842ed29860648bcce5022ef0ba5001c6 |
| Linux | Linux | 4.6 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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