CVE-2026-64377 (GCVE-0-2026-64377)
Vulnerability from cvelistv5
Published
2026-07-25 08:50
Modified
2026-08-17 04:54
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
| URL | Tags | |
|---|---|---|
Impacted products
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"programFiles": [
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"versionType": "semver"
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{
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: qcom-cpufreq-hw: Fix possible double free\n\nqcom_cpufreq.data is allocated with devm_kzalloc() in probe() as an\narray of per-domain data. qcom_cpufreq_hw_cpu_init() stores a pointer to\none element of this array in policy-\u003edriver_data.\n\nqcom_cpufreq_hw_cpu_exit() currently calls kfree() on policy-\u003edriver_data.\nThis is not valid because the memory is devm-managed. For the first\ndomain, this can free the devm-managed allocation while the devres entry\nis still active, leading to a possible double free when the platform\ndevice is later detached. For other domains, the pointer may refer to an\nelement inside the array rather than the allocation base.\n\nRemove the kfree(data) call and let devres release qcom_cpufreq.data.\n\nThis issue was found by a static analysis tool I am developing."
}
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{
"url": "https://git.kernel.org/stable/c/bcb8889c4981fdde42d4fd2c29a77d510fe21da2"
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"title": "cpufreq: qcom-cpufreq-hw: Fix possible double free",
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"cveId": "CVE-2026-64377",
"datePublished": "2026-07-25T08:50:28.299Z",
"dateReserved": "2026-07-19T15:36:31.784Z",
"dateUpdated": "2026-08-17T04:54:28.396Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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