7.8

CVE-2026-64377

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.2 < 6.12.96
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.39
Linux ≫ Linux Kernel Version >= 6.19 < 7.1.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.064
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-415 Double Free

The product calls free() twice on the same memory address.

https://git.kernel.org/stable/c/28a03a3f6e6cda0b0da3b43761d175dec5d14d13
Patch
https://git.kernel.org/stable/c/e904961332801c87355f5d11c65bb433e717c489
Patch
https://git.kernel.org/stable/c/9de568ef6cdfc7912d5ea8db02843c0e4ef0c75d
Patch
https://git.kernel.org/stable/c/bcb8889c4981fdde42d4fd2c29a77d510fe21da2
Patch