CVE-2025-39752: ARM: rockchip: fix kernel hang during smp initialization
Vulnerability summary
CVE-2025-39752 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 28 · Related 25Timeline
- 11-09-2025PublishedVulnerability first disclosed.
- 12-05-2026Last modifiedVulnerability information updated.
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
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.18% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu149 products
- linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.153-1 | < 6.12.43-1 | < 6.16.3-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 3c6bf7a324b8995b9c7d790c8d2abf0668f51551 | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 888a453c2a239765a7ab4de8a3cedae2e3802528 | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < c0726d1e466e2d0da620836e293a59e6427ccdff | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 265583266d93db4ff83d088819b1f63fdf0131db | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < d7d6d076ee9532c4668f14696a35688d35dd16f4 | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 0223a3683d502b7e5eb2eb4ad7e97363fa88d531 | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 47769dab9073a73e127aa0bfd0ba4c51eaccdc33 | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 1eb67589a7e091b1e5108aab72fddbf4dc69af2c | ≥ 3ee851e212d0bb6be8c462059fba74ce2e3f6064, < 7cdb433bb44cdc87dc5260cdf15bf03cc1cd1814 | 3.19
- linux_kernel≥ 3.19, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.149 | ≥ 6.2, < 6.6.103 | ≥ 6.7, < 6.12.43 | ≥ 6.13, < 6.15.11 | ≥ 6.16, < 6.16.2
3 vendors · 153 products
