{"id":"CVE-2026-97904","title":"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 di…","summary":"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 di…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-908"],"vendor":"Linux","product":"Linux","affected":["Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < c9d8435814f2ac533c40fe3f35d94235bc3a9443","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 82a54923700da5de83ce2b26c0b43f6b5005c8f1","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < b14987a0f73777644099f47f01aba3b0f9dc6c27","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < dc11263cb05ed519758fd135fe08d611bad1f241","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 27c9b491bf7604e83b50c3bbfa18a30266ff345f","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 2cee937f779f69b195b37bbec1e888da9bfe9d58","Linux >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 3e5d1bf4bd687beb2cb4e32a07af695455925588","Linux 4.2"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:08.700","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97904","references":[{"url":"https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c9d8435814f2ac533c40fe3f35d94235bc3a9443","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97904.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97904"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541241"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97904"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97904"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97904.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00216,"epssPercentile":0.11987,"cvssSource":"vendor","ingestedAt":"2026-09-25T11:06:38.894Z","slug":"CVE-2026-97904","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97904.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213534,"id":"CVE-2026-97904","ts":1790754769272,"field":"cvss","old":null,"new":"5.5"},{"seq":213533,"id":"CVE-2026-97904","ts":1790754769272,"field":"severity","old":"none","new":"medium"}]}