{"api_version":"1","generated_at":"2026-10-08T06:57:47+00:00","cve":"CVE-2026-97904","urls":{"html":"https://cve.report/CVE-2026-97904","api":"https://cve.report/api/cve/CVE-2026-97904.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97904","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97904"},"summary":{"title":"cpufreq: initialize policy rwsem before sysfs publication","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: initialize policy rwsem before sysfs publication\n\ncpufreq_policy_alloc() initializes policy->rwsem after\nkobject_init_and_add() has created the policy sysfs directory and its\ndefault attributes. A sysfs access can therefore reach a policy callback\nbefore the semaphore has been initialized.\n\nInitialize policy->rwsem before publishing the policy kobject so sysfs\ncallbacks always see an initialized semaphore.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:17","updated_at":"2026-10-03 11:18:08"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a","name":"https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c9d8435814f2ac533c40fe3f35d94235bc3a9443","name":"https://git.kernel.org/stable/c/c9d8435814f2ac533c40fe3f35d94235bc3a9443","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f","name":"https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1","name":"https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588","name":"https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241","name":"https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27","name":"https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58","name":"https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97904","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97904","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 c9d8435814f2ac533c40fe3f35d94235bc3a9443 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 82a54923700da5de83ce2b26c0b43f6b5005c8f1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 b14987a0f73777644099f47f01aba3b0f9dc6c27 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97904","cve":"CVE-2026-97904","epss":"0.002100000","percentile":"0.102520000","score_date":"2026-10-05","updated_at":"2026-10-06 00:14:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/cpufreq/cpufreq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c9d8435814f2ac533c40fe3f35d94235bc3a9443","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"82a54923700da5de83ce2b26c0b43f6b5005c8f1","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"b14987a0f73777644099f47f01aba3b0f9dc6c27","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"dc11263cb05ed519758fd135fe08d611bad1f241","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"27c9b491bf7604e83b50c3bbfa18a30266ff345f","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"2cee937f779f69b195b37bbec1e888da9bfe9d58","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"},{"lessThan":"3e5d1bf4bd687beb2cb4e32a07af695455925588","status":"affected","version":"2fc3384dc75bf7333384c7a16d12c796f61c3f56","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/cpufreq/cpufreq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.271","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"4.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: initialize policy rwsem before sysfs publication\n\ncpufreq_policy_alloc() initializes policy->rwsem after\nkobject_init_and_add() has created the policy sysfs directory and its\ndefault attributes. A sysfs access can therefore reach a policy callback\nbefore the semaphore has been initialized.\n\nInitialize policy->rwsem before publishing the policy kobject so sysfs\ncallbacks always see an initialized semaphore."}],"providerMetadata":{"dateUpdated":"2026-10-03T11:00:23.973Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c9d8435814f2ac533c40fe3f35d94235bc3a9443"},{"url":"https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1"},{"url":"https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27"},{"url":"https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a"},{"url":"https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241"},{"url":"https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f"},{"url":"https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58"},{"url":"https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588"}],"title":"cpufreq: initialize policy rwsem before sysfs publication","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97904","datePublished":"2026-09-25T10:22:30.444Z","dateReserved":"2026-09-25T10:18:58.200Z","dateUpdated":"2026-10-03T11:00:23.973Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:17","lastModifiedDate":"2026-10-03 11:18:08","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97904","Ordinal":"1","Title":"cpufreq: initialize policy rwsem before sysfs publication","CVE":"CVE-2026-97904","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97904","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: initialize policy rwsem before sysfs publication\n\ncpufreq_policy_alloc() initializes policy->rwsem after\nkobject_init_and_add() has created the policy sysfs directory and its\ndefault attributes. A sysfs access can therefore reach a policy callback\nbefore the semaphore has been initialized.\n\nInitialize policy->rwsem before publishing the policy kobject so sysfs\ncallbacks always see an initialized semaphore.","Type":"Description","Title":"cpufreq: initialize policy rwsem before sysfs publication"}]}}}