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CVE-2026-97904

UnknownEPSS 0.21%

Last modified

CVE-2026-97904 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: cpufreq: initialize policy rwsem before sysfs publication cpufreq_policy_alloc() initializes policy->rwsem after kobject_init_and_add() has created the policy sysfs directory and its default attributes. A sysfs access can therefore reach a policy callback before the semaphore has been initialized. Initialize policy->rwsem before publishing the policy kobject so sysfs callbacks always see an initialized semaphore.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: initialize policy rwsem before sysfs publication cpufreq_policy_alloc() initializes policy->rwsem after kobject_init_and_add() has created the policy sysfs directory and its default attributes. A sysfs access can therefore reach a policy callback before the semaphore has been initialized. Initialize policy->rwsem before publishing the policy kobject so sysfs callbacks always see an initialized semaphore.

Metrics

EPSS Probability
0.21%

10.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < c9d8435814f2ac533c40fe3f35d94235bc3a9443; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < 82a54923700da5de83ce2b26c0b43f6b5005c8f1; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < b14987a0f73777644099f47f01aba3b0f9dc6c27; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < dc11263cb05ed519758fd135fe08d611bad1f241; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < 27c9b491bf7604e83b50c3bbfa18a30266ff345f; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < 2cee937f779f69b195b37bbec1e888da9bfe9d58; >= 2fc3384dc75bf7333384c7a16d12c796f61c3f56, < 3e5d1bf4bd687beb2cb4e32a07af695455925588
LinuxLinux4.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-97904?
In the Linux kernel, the following vulnerability has been resolved: cpufreq: initialize policy rwsem before sysfs publication cpufreq_policy_alloc() initializes policy->rwsem after kobject_init_and_add() has created the policy sysfs directory and its default attributes. A sysfs access can therefore reach a policy callback before the semaphore has been initialized. Initialize policy->rwsem before publishing the policy kobject so sysfs callbacks always see an initialized semaphore.
How severe is CVE-2026-97904?
Severity scoring for CVE-2026-97904 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-97904?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST