CVE-2026-64377

cpufreq: qcom-cpufreq-hw: Fix possible double free

HIGH
7.8
CVSS Score
Published: July 25, 2026 at 08:50 AM UTC
Updated: October 21, 2026 at 01:19 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: qcom-cpufreq-hw: Fix possible double free qcom_cpufreq.data is allocated with devm_kzalloc() in probe() as an array of per-domain data. qcom_cpufreq_hw_cpu_init() stores a pointer to one element of this array in policy->driver_data. qcom_cpufreq_hw_cpu_exit() currently calls kfree() on policy->driver_data. This is not valid because the memory is devm-managed. For the first domain, this can free the devm-managed allocation while the devres entry is still active, leading to a possible double free when the platform device is later detached. For other domains, the pointer may refer to an element inside the array rather than the allocation base. Remove the kfree(data) call and let devres release qcom_cpufreq.data. This issue was found by a static analysis tool I am developing.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.13 ≤ v < 6.18.396.19 ≤ v < 7.1.46.2 ≤ v < 6.12.9654a3ef683a176a509cc9b37f762029aae9424956.2
Vendor states this is fixed in 28a03a3f6e6cda0b0da3b43761d175dec5d14d13 (fixed)
Vendor states this is fixed in 9de568ef6cdfc7912d5ea8db02843c0e4ef0c75d (fixed)
Vendor states this is fixed in bcb8889c4981fdde42d4fd2c29a77d510fe21da2 (fixed)
Vendor states this is fixed in e904961332801c87355f5d11c65bb433e717c489 (fixed)
Vendor states this is fixed in 6.12.96 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 6.2 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-415

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