cbcvebase.
CVE-2025-40130
published 2025-11-12

CVE-2025-40130: In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling The…

PriorityP424medium6.8
EPSS
0.18%
8.0th percentile
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 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 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.

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.17.6-1 (forky)linux 6.17.6-1 (forky)
linuxlinux
linuxlinux>= 2777e73fc154e2e87233bdcc0e2402b33815198e < d9df61afb8d23c475f1be3c714da2c34c156ab01d9df61afb8d23c475f1be3c714da2c34c156ab01
linuxlinux>= 2777e73fc154e2e87233bdcc0e2402b33815198e < 79dde5f7dc7c038eec903745dc1550cd4139980e79dde5f7dc7c038eec903745dc1550cd4139980e
linuxlinux_kernel>= 0 < 6.17.6-16.17.6-1
linuxlinux_kernel>= 0 < 6.17.0-14.146.17.0-14.14
linuxlinux_kernel>= 6.9.0 < 6.17.36.17.3
ubuntulinux-aws
ubuntulinux-oracle
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