CVE-2026-74652
serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ
CVSS Score
7.8
EPSS Score
0.2%
EPSS Percentile
6th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 22, 2026 |
| Last Updated | Aug 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
2c1fd53af21b8cb13878b054894d33d3383eb1f3 < 759ead98a39fb625be302f9aa66290985dcaa325 2c1fd53af21b8cb13878b054894d33d3383eb1f3 < e57f0aa5c35be37218ba0e4887b241584dd4b2d2 2c1fd53af21b8cb13878b054894d33d3383eb1f3 < 36672c8d7d14e9c43287528455d2c97b526ea6ad
Linux / Linux
6.14