What’s Vulnerable › Vulnerabilities

CVE-2021-47093: platform/x86: intel_pmc_core: fix memleak on registration failure

• 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: 2024-03-04 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86: intel_pmc_core: fix memleak on registration failure In case device registration fails during module initialisation, the platform device structure needs to be freed using platform_device_put() to properly free all resources (e.g. the device name).

Affected products

• Linux kernel: from 5.9 before 5.10.89; from 5.11 before 5.15.12; 5.16-rc1, 5.16-rc2, 5.16-rc3, 5.16-rc4, 5.16-rc5, 5.16-rc6 — fixed in 5.10.89, 5.15.12

How to fix

Upgrade to a fixed version: Linux kernel 5.10.89, 5.15.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/26a8b09437804fabfb1db080d676b96c0de68e7c
• https://git.kernel.org/stable/c/7a37f2e370699e2feca3dca6c8178c71ceee7e8a
• https://git.kernel.org/stable/c/9ca1324755f1f8629a370af5cc315b175331f5d1
• https://git.kernel.org/stable/c/26a8b09437804fabfb1db080d676b96c0de68e7c
• https://git.kernel.org/stable/c/7a37f2e370699e2feca3dca6c8178c71ceee7e8a
• https://git.kernel.org/stable/c/9ca1324755f1f8629a370af5cc315b175331f5d1

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