{"id":"CVE-2025-40194","summary":"cpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()\n\nThe cpufreq_cpu_put() call in update_qos_request() takes place too early\nbecause the latter subsequently calls freq_qos_update_request() that\nindirectly accesses the policy object in question through the QoS request\nobject passed to it.\n\nFortunately, update_qos_request() is called under intel_pstate_driver_lock,\nso this issue does not matter for changing the intel_pstate operation\nmode, but it theoretically can cause a crash to occur on CPU device hot\nremoval (which currently can only happen in virt, but it is formally\nsupported nevertheless).\n\nAddress this issue by modifying update_qos_request() to drop the\nreference to the policy later.","modified":"2026-05-18T05:59:31.732837816Z","published":"2025-11-12T21:56:32.025Z","related":["SUSE-SU-2025:4393-1","SUSE-SU-2025:4422-1","SUSE-SU-2025:4505-1","SUSE-SU-2025:4516-1","SUSE-SU-2025:4517-1","SUSE-SU-2025:4521-1","SUSE-SU-2026:20012-1","SUSE-SU-2026:20015-1","SUSE-SU-2026:20021-1","SUSE-SU-2026:20039-1","SUSE-SU-2026:20059-1","SUSE-SU-2026:20473-1","SUSE-SU-2026:20496-1","openSUSE-SU-2025:20172-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40194.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0a58d3e77b22b087a57831c87cafd360e144a5bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15ac9579ebdaf22a37d7f60b3a8efc1029732ef9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/57e4a6aadf12578b96a038373cffd54b3a58b092"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69a18ff6c60e8e113420f15355fad862cb45d38e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69e5d50fcf4093fb3f9f41c4f931f12c2ca8c467"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad4e8f9bdbef11a19b7cb93e7f313bf59bdcc3b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ba63d4e9857a72a89e71a4eff9f2cc8c283e94c3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc26564bcc659beb6d977cd6eb394041ec2f2851"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40194.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40194"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"da5c504c7aae96db68c4b38e2564a88e91842d89"},{"fixed":"15ac9579ebdaf22a37d7f60b3a8efc1029732ef9"},{"fixed":"bc26564bcc659beb6d977cd6eb394041ec2f2851"},{"fixed":"ad4e8f9bdbef11a19b7cb93e7f313bf59bdcc3b4"},{"fixed":"0a58d3e77b22b087a57831c87cafd360e144a5bd"},{"fixed":"69a18ff6c60e8e113420f15355fad862cb45d38e"},{"fixed":"ba63d4e9857a72a89e71a4eff9f2cc8c283e94c3"},{"fixed":"57e4a6aadf12578b96a038373cffd54b3a58b092"},{"fixed":"69e5d50fcf4093fb3f9f41c4f931f12c2ca8c467"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40194.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.301"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.246"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.195"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40194.json"}}],"schema_version":"1.7.5"}