{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40130","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.170Z","datePublished":"2025-11-12T10:23:21.605Z","dateUpdated":"2026-05-11T21:43:19.987Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:43:19.987Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix data race in CPU latency PM QoS request handling\n\nThe cpu_latency_qos_add/remove/update_request interfaces lack internal\nsynchronization by design, requiring the caller to ensure thread safety.\nThe current implementation relies on the 'pm_qos_enabled' flag, which is\ninsufficient to prevent concurrent access and cannot serve as a proper\nsynchronization mechanism. This has led to data races and list\ncorruption issues.\n\nA typical race condition call trace is:\n\n[Thread A]\nufshcd_pm_qos_exit()\n  --> cpu_latency_qos_remove_request()\n    --> cpu_latency_qos_apply();\n      --> pm_qos_update_target()\n        --> plist_del              <--(1) delete plist node\n    --> memset(req, 0, sizeof(*req));\n  --> hba->pm_qos_enabled = false;\n\n[Thread B]\nufshcd_devfreq_target\n  --> ufshcd_devfreq_scale\n    --> ufshcd_scale_clks\n      --> ufshcd_pm_qos_update     <--(2) pm_qos_enabled is true\n        --> cpu_latency_qos_update_request\n          --> pm_qos_update_target\n            --> plist_del          <--(3) plist node use-after-free\n\nIntroduces a dedicated mutex to serialize PM QoS operations, preventing\ndata races and ensuring safe access to PM QoS resources, including sysfs\ninterface reads."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufs-sysfs.c","drivers/ufs/core/ufshcd.c","include/ufs/ufshcd.h"],"versions":[{"version":"2777e73fc154e2e87233bdcc0e2402b33815198e","lessThan":"d9df61afb8d23c475f1be3c714da2c34c156ab01","status":"affected","versionType":"git"},{"version":"2777e73fc154e2e87233bdcc0e2402b33815198e","lessThan":"79dde5f7dc7c038eec903745dc1550cd4139980e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufs-sysfs.c","drivers/ufs/core/ufshcd.c","include/ufs/ufshcd.h"],"versions":[{"version":"6.9","status":"affected"},{"version":"0","lessThan":"6.9","status":"unaffected","versionType":"semver"},{"version":"6.17.3","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.17.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d9df61afb8d23c475f1be3c714da2c34c156ab01"},{"url":"https://git.kernel.org/stable/c/79dde5f7dc7c038eec903745dc1550cd4139980e"}],"title":"scsi: ufs: core: Fix data race in CPU latency PM QoS request handling","x_generator":{"engine":"bippy-1.2.0"}}}}