SB20260727200 - Double free in Linux kernel cpufreq driver
Published: July 27, 2026
Security Bulletin ID
SB20260727200
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double free (CVE-ID: CVE-2026-64377)
CWE-ID: CWE-415 - Double Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free in qcom_cpufreq_hw_cpu_exit() when releasing CPU policy data. A local user can trigger CPU policy teardown to cause a denial of service.
The issue occurs because driver_data may reference devm-managed memory, including an interior element of a per-domain array rather than the original allocation base.
Remediation
Install update from vendor's website.