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().
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0e84e74849d2d7e9b23a09c2d5e0d9357db1ca59 Patch
- git.kernel.org/stable/c/18605b1b936b66b1f34dcf8e9ad4f1fbcf7a7c13 Patch
- git.kernel.org/stable/c/572f17180f26619809b8e0593d926762aa8660ff Patch
- git.kernel.org/stable/c/622ab02e955c35c125ff2b65d8327b2c52db8758 Patch
- git.kernel.org/stable/c/9443202d91388026dbf7312972a74fbfd27ee82f Patch
- git.kernel.org/stable/c/b826d2c0b0ecb844c84431ba6b502e744f5d919a Patch
- git.kernel.org/stable/c/c5e734f6a0740dce92e7c919e632cb43fa5d4e53 Patch
- git.kernel.org/stable/c/ea4fa54b83bb2e4a21e9026824bfe271b1a6ee1e Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 13 November 2026
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