CVE-2026-74652: serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ
Published Aug 22, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ
The RS485 trigger hrtimers are embedded in the devm-managed port and can fire after it is freed. The IRQ handler can arm a timer, so free the IRQ first and then cancel both timers.
Complete the RS485 stop without arming a timer, and cancel the timers in remove() for the suspend-then-unbind path, where shutdown is not called.
This issue was found by an in-house static analysis tool.
Affected Software
1 affected component
Linux Linux kernel
Event History
Aug 22, 2026
CVE Published
via MITRE·03:32 PM
Data Sourced
via MITRE·03:32 PM
Description
Data Sourced
via NVD·04:16 PM
Description