CVE-2026-31550

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> pmdomain: bcm: bcm2835-power: Increase ASB control timeout<br /> <br /> The bcm2835_asb_control() function uses a tight polling loop to wait<br /> for the ASB bridge to acknowledge a request. During intensive workloads,<br /> this handshake intermittently fails for V3D&amp;#39;s master ASB on BCM2711,<br /> resulting in "Failed to disable ASB master for v3d" errors during<br /> runtime PM suspend. As a consequence, the failed power-off leaves V3D in<br /> a broken state, leading to bus faults or system hangs on later accesses.<br /> <br /> As the timeout is insufficient in some scenarios, increase the polling<br /> timeout from 1us to 5us, which is still negligible in the context of a<br /> power domain transition. Also, replace the open-coded ktime_get_ns()/<br /> cpu_relax() polling loop with readl_poll_timeout_atomic().