Strix
26.1K

CVE-2026-64372

HIGHCVSS 7.8/10EPSS 0.13%

Last modified

CVE-2026-64372 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: cpufreq: pcc: fix use-after-free and double free in _OSC evaluation pcc_cpufreq_do_osc() calls acpi_evaluate_object() twice for the two-phase _OSC negotiation. Between the two calls it freed output.pointer but left output.length unchanged. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: pcc: fix use-after-free and double free in _OSC evaluation pcc_cpufreq_do_osc() calls acpi_evaluate_object() twice for the two-phase _OSC negotiation. Between the two calls it freed output.pointer but left output.length unchanged. Since acpi_evaluate_object() treats a non-zero length with a non-NULL pointer as an existing buffer to write into, the second call wrote into freed memory (use-after-free). The subsequent kfree(output.pointer) at out_free then freed the same pointer a second time (double free). Reset output.pointer to NULL and output.length to ACPI_ALLOCATE_BUFFER after freeing the first result, so ACPICA allocates a fresh buffer for each phase independently.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.13%

2.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 8e454e9d0bc03446d610ee49abec9dfd424f6541; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 632666a63116d8061c62a988d1ca39dcd6d27c9b; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 5cdb25f144b101083d8bf3fd023ad87fbe6850d7; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 982c9f92d57bda2b769851ff6d90d43dcf5f3734; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < a36ca93a8ba57464e521d70a337d37f069064111; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 6ba6f6783be2ffeb2cbcdc9321c4b9f708f796f7; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 0e3c739a2f6fc1de5b19a8839ab80696b9cb2a29; >= 0f1d683fb35d6c6f49ef696c95757f3970682a0e, < 266d3dd8b757b48a576e90f018b51f7b7563cc32
LinuxLinux2.6.34

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-64372?
In the Linux kernel, the following vulnerability has been resolved: cpufreq: pcc: fix use-after-free and double free in _OSC evaluation pcc_cpufreq_do_osc() calls acpi_evaluate_object() twice for the two-phase _OSC negotiation. Between the two calls it freed output.pointer but left output.length unchanged. Since acpi_evaluate_object() treats a non-zero length with a non-NULL pointer as an existing buffer to write into, the second call wrote into freed memory (use-after-free). The subsequent kfree(output.pointer) at out_free then freed the same pointer a second time (double free). Reset output.pointer to NULL and output.length to ACPI_ALLOCATE_BUFFER after freeing the first result, so ACPICA allocates a fresh buffer for each phase independently.
How severe is CVE-2026-64372?
CVE-2026-64372 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-64372?
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.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-64372?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST