Riskcovery

CVE-2026-74652

serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ

State
Published
Severity
7.8 High
Published
Aug 22, 2026
Updated
Aug 25, 2026
Reserved
Aug 15, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2c1fd53af21b8cb13878b054894d33d3383eb1f3 to before 759ead98a39fb625be302f9aa66290985dcaa325Affected
  • 2c1fd53af21b8cb13878b054894d33d3383eb1f3 to before e57f0aa5c35be37218ba0e4887b241584dd4b2d2Affected
  • 2c1fd53af21b8cb13878b054894d33d3383eb1f3 to before 36672c8d7d14e9c43287528455d2c97b526ea6adAffected
LinuxLinux
  • 6.14Affected
  • before 6.14Not affected
  • 6.18.45 through 6.18.*Not affected
  • 7.1.9 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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