CVE-2026-53121 Details
Description
In the Linux kernel, the following vulnerability has been resolved: amd-pstate: Fix memory leak in amd_pstate_epp_cpu_init() On failure to set the epp, the function amd_pstate_epp_cpu_init() returns with an error code without freeing the cpudata object that was allocated at the beginning of the function. Ensure that the cpudata object is freed before returning from the function. This memory leak was discovered by Claude Opus 4.6 with the aid of Chris Mason's AI review-prompts (https://github.com/masoncl/review-prompts/tree/main/kernel).
A memory leak vulnerability has been identified in the Linux kernel's AMD Pstate driver, specifically within the EPP CPU initialization function. When the function fails to set the Energy Performance Preference (EPP), it returns an error code without freeing the allocated cpudata object, leading to a memory leak. This issue affects the Linux kernel stable tree.
Users can apply the available patch in the Linux kernel stable tree to address this vulnerability. The patch is included in the official Linux kernel repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/539aabbab190825c77eb455ec35652cb3720625f | kernel.org | Patch |
| https://git.kernel.org/stable/c/7f9aa2359742eaa6ea65ec0d20dafdfd0add9b8b | kernel.org | Patch |
| https://git.kernel.org/stable/c/beda3b363546a423e4e29a7395e04c0ac4ff677e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.14, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | Initial Analysis | [email protected] |
| Jun 24, 2026 | New CVE Received | kernel.org |