What’s Vulnerable › Vulnerabilities

CVE-2021-47417: libbpf: Fix memory leak in strset

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: libbpf: Fix memory leak in strset Free struct strset itself, not just its internal parts.

Affected products

• Linux kernel: from 5.13 before 5.14.12; 5.15-rc1, 5.15-rc2, 5.15-rc3, 5.15-rc4 — fixed in 5.14.12

How to fix

Upgrade to a fixed version: Linux kernel 5.14.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/9e8e7504e09831c469b67d6dc11d9a72654bdb8c
• https://git.kernel.org/stable/c/b0e875bac0fab3e7a7431c2eee36a8ccc0c712ac
• https://git.kernel.org/stable/c/9e8e7504e09831c469b67d6dc11d9a72654bdb8c
• https://git.kernel.org/stable/c/b0e875bac0fab3e7a7431c2eee36a8ccc0c712ac

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