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CVE-2026-31550

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: pmdomain: bcm: bcm2835-power: Increase ASB control timeout The bcm2835_asb_control() function uses a tight polling loop to wait…

Published Apr 24, 2026EPSS 0.16%

Overview

CVE-2026-31550 is a medium-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

pmdomain: bcm: bcm2835-power: Increase ASB control timeout

The bcm2835_asb_control() function uses a tight polling loop to wait

for the ASB bridge to acknowledge a request. During intensive workloads,

this handshake intermittently fails for V3D's master ASB on BCM2711,

resulting in "Failed to disable ASB master for v3d" errors during

runtime PM suspend. As a consequence, the failed power-off leaves V3D in

a broken state, leading to bus faults or system hangs on later accesses.

As the timeout is insufficient in some scenarios, increase the polling

timeout from 1us to 5us, which is still negligible in the context of a

power domain transition. Also, replace the open-coded ktime_get_ns()/

cpu_relax() polling loop with readl_poll_timeout_atomic().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0e84e74849d2d7e9b23a09c2d5e0d9357db1ca59Refgit.kernel.org/stable/c/18605b1b936b66b1f34dcf8e9ad4f1fbcf7a7c13Refgit.kernel.org/stable/c/572f17180f26619809b8e0593d926762aa8660ffRefgit.kernel.org/stable/c/622ab02e955c35c125ff2b65d8327b2c52db8758Refgit.kernel.org/stable/c/9443202d91388026dbf7312972a74fbfd27ee82fRefgit.kernel.org/stable/c/b826d2c0b0ecb844c84431ba6b502e744f5d919aRefgit.kernel.org/stable/c/c5e734f6a0740dce92e7c919e632cb43fa5d4e53Refgit.kernel.org/stable/c/ea4fa54b83bb2e4a21e9026824bfe271b1a6ee1e

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31550?

CVE-2026-31550 is a medium-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31550?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-31550?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-31550?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31550 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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