CVE-2026-31550
Estado: AnalizadaMedia (5.5)—
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.
Leer descripción completaMostrar menos
Also, replace the open-coded ktime_get_ns()/ cpu_relax() polling loop with readl_poll_timeout_atomic().
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/0e84e74849d2d7e9b23a09c2d5e0d9357db1ca59
- https://git.kernel.org/stable/c/18605b1b936b66b1f34dcf8e9ad4f1fbcf7a7c13
- https://git.kernel.org/stable/c/572f17180f26619809b8e0593d926762aa8660ff
- https://git.kernel.org/stable/c/622ab02e955c35c125ff2b65d8327b2c52db8758
- https://git.kernel.org/stable/c/9443202d91388026dbf7312972a74fbfd27ee82f
- https://git.kernel.org/stable/c/b826d2c0b0ecb844c84431ba6b502e744f5d919a
- https://git.kernel.org/stable/c/c5e734f6a0740dce92e7c919e632cb43fa5d4e53
- https://git.kernel.org/stable/c/ea4fa54b83bb2e4a21e9026824bfe271b1a6ee1e
JSON original (NVD)
Mostrar
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