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How the CVE-2025-54629 works: This vulnerability is a race condition in the physical page import process of the memory management module in Huawei systems. Physical pages are units of memory managed by the operating system for allocation. The import process involves adding pages to memory pools, updating page tables, and modifying metadata like reference counts. A race condition occurs when multiple threads or processes execute this import concurrently without adequate synchronization. Specifically, timing windows exist where critical operations—such as state transitions or descriptor updates—can be interleaved incorrectly. For instance, one thread might read page metadata while another is modifying it, leading to inconsistent states. An attacker with high privileges (PR:H) could exploit this by crafting malicious code that spawns concurrent threads to trigger race conditions during page imports. This could corrupt memory management structures, resulting in use-after-free, double-free, or unauthorized access. The vulnerability has low attack complexity (AC:L) and is locally exploitable (AV:L), but requires high privileges. Successful exploitation may allow bypassing security checks, escalating privileges, or causing memory corruption, ultimately affecting service integrity. The CVSS score reflects high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), though limited to local scope.
Platform: Huawei
Version: Unknown
Vulnerability: Race condition issue
Severity: Medium
Date: 08/05/2025
Prediction: Patch TBA
What Undercode Say:
Analytics
- Check system logs: `dmesg | grep -i “memory”`
– Monitor kernel threads: `ps aux | grep -i kmod`
– Simulate race condition with C code:include <pthread.h> void import_page(void arg) { // Simulate page import race return NULL; } int main() { pthread_t t1, t2; pthread_create(&t1, NULL, import_page, NULL); pthread_create(&t2, NULL, import_page, NULL); pthread_join(t1, NULL); pthread_join(t2, NULL); return 0; }
how Exploit:
Privileged user triggers concurrent physical page imports via multi-threaded code, causing metadata corruption to escalate privileges or disrupt services.
Protection from this CVE
Apply Huawei patches. Implement synchronization mechanisms. Restrict privileged access.
Impact:
Service integrity compromise. Data corruption. Denial of service.
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Sources:
Reported By: nvd.nist.gov
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