CVE-2025-40130
- Source
- https://cve.org/CVERecord?id=CVE-2025-40130
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40130.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-40130
- Downstream
- Related
- Published
- 2025-11-12T10:23:21Z
- Modified
- 2026-08-12T03:51:45Z
- Summary
- scsi: ufs: core: Fix data race in CPU latency PM QoS request handling
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: core: Fix data race in CPU latency PM QoS request handling
The cpu_latency_qos_add/remove/update_request interfaces lack internal synchronization by design, requiring the caller to ensure thread safety. The current implementation relies on the 'pm_qos_enabled' flag, which is insufficient to prevent concurrent access and cannot serve as a proper synchronization mechanism. This has led to data races and list corruption issues.
A typical race condition call trace is:
[Thread A] ufshcd_pm_qos_exit() --> cpu_latency_qos_remove_request() --> cpu_latency_qos_apply(); --> pm_qos_update_target() --> plist_del <--(1) delete plist node --> memset(req, 0, sizeof(*req)); --> hba->pm_qos_enabled = false;
[Thread B] ufshcd_devfreq_target --> ufshcd_devfreq_scale --> ufshcd_scale_clks --> ufshcd_pm_qos_update <--(2) pm_qos_enabled is true --> cpu_latency_qos_update_request --> pm_qos_update_target --> plist_del <--(3) plist node use-after-free
Introduces a dedicated mutex to serialize PM QoS operations, preventing data races and ensuring safe access to PM QoS resources, including sysfs interface reads.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40130.json" }- References
-
- https://git.kernel.org/stable/c/79dde5f7dc7c038eec903745dc1550cd4139980e
- https://git.kernel.org/stable/c/d9df61afb8d23c475f1be3c714da2c34c156ab01
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40130.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40130
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git