Double free in Linux kernel - CVE-2025-38421
Published: July 27, 2025
Vulnerability identifier: #VU113298
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2025-38421
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2025-38421
Install update from vendor's repository.