CVE-2025-39752

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. 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 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

Published

2025-09-11

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• debian:debian_linux
• linux:linux_kernel

References

• 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

Check your stackJSON