CVE-2025-39752
ARM: rockchip: fix kernel hang during smp initialization
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Description
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
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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
References (12)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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