SB2025072773 - Double free in Linux kernel amd pmf driver
Published: July 27, 2025
Security Bulletin ID
SB2025072773
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-2025-38421)
CWE-ID: CWE-415 - Double Free
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a double free error within the amd_pmf_get_pb_data(), amd_pmf_init_smart_pc() and amd_pmf_deinit_smart_pc() functions in drivers/platform/x86/amd/pmf/tee-if.c, within the amd_pmf_set_dram_addr() and amd_pmf_remove() functions in drivers/platform/x86/amd/pmf/core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.