CVE-2025-39752
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ARM: rockchip: fix kernel hang during smp initialization
In order to bring up secondary CPUs main CPU write trampoline code to SRAM. The trampoline code is written while secondary CPUs are powered on (at least that true for RK3188 CPU). Sometimes that leads to kernel hang. Probably because secondary CPU execute trampoline code while kernel doesn't expect.
The patch moves SRAM initialization step to the point where all secondary CPUs are powered down.
Detalles técnicos trazas, registros y código del informe original
That fixes rarely hangs on RK3188: [ 0.091568] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.091996] rockchip_smp_prepare_cpus: ncores 4
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: 0.18%
- Percentil entre todas las CVEs puntuadas: 6
- Fecha de la puntuación: 5/10/2026
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 (2)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/0223a3683d502b7e5eb2eb4ad7e97363fa88d531
- https://git.kernel.org/stable/c/1eb67589a7e091b1e5108aab72fddbf4dc69af2c
- https://git.kernel.org/stable/c/265583266d93db4ff83d088819b1f63fdf0131db
- https://git.kernel.org/stable/c/3c6bf7a324b8995b9c7d790c8d2abf0668f51551
- https://git.kernel.org/stable/c/47769dab9073a73e127aa0bfd0ba4c51eaccdc33
- https://git.kernel.org/stable/c/7cdb433bb44cdc87dc5260cdf15bf03cc1cd1814
- https://git.kernel.org/stable/c/888a453c2a239765a7ab4de8a3cedae2e3802528
- https://git.kernel.org/stable/c/c0726d1e466e2d0da620836e293a59e6427ccdff
- https://git.kernel.org/stable/c/d7d6d076ee9532c4668f14696a35688d35dd16f4
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: rockchip: fix kernel hang during smp initialization\n\nIn order to bring up secondary CPUs main CPU write trampoline\ncode to SRAM. The trampoline code is written while secondary\nCPUs are powered on (at least that true for RK3188 CPU).\nSometimes that leads to kernel hang. Probably because secondary\nCPU execute trampoline code while kernel doesn't expect.\n\nThe patch moves SRAM initialization step to the point where all\nsecondary CPUs are powered down.\n\nThat fixes rarely hangs on RK3188:\n[ 0.091568] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000\n[ 0.091996] rockchip_smp_prepare_cpus: ncores 4"
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