What’s Vulnerable › Vulnerabilities

CVE-2024-40997: cpufreq: amd-pstate: fix memory leak on CPU EPP exit

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-12 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: amd-pstate: fix memory leak on CPU EPP exit The cpudata memory from kzalloc() in amd_pstate_epp_cpu_init() is not freed in the analogous exit function, so fix that. [ rjw: Subject and changelog edits ]

Affected products

• Linux kernel: before 6.6.36; from 6.7 before 6.9.7 — fixed in 6.6.36, 6.9.7

How to fix

Upgrade to a fixed version: Linux kernel 6.6.36, 6.9.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/448efb7ea0bfa2c4e27c5a2eb5684fd225cd12cd
• https://git.kernel.org/stable/c/8015c17fe11a8608cc3eb83d0ab831e1845a9582
• https://git.kernel.org/stable/c/cea04f3d9aeebda9d9c063c0dfa71e739c322c81
• https://git.kernel.org/stable/c/448efb7ea0bfa2c4e27c5a2eb5684fd225cd12cd
• https://git.kernel.org/stable/c/8015c17fe11a8608cc3eb83d0ab831e1845a9582
• https://git.kernel.org/stable/c/cea04f3d9aeebda9d9c063c0dfa71e739c322c81

Get alerted when CVE-2024-40997 or the next vulnerability affects your stack