What’s Vulnerable › Vulnerabilities

CVE-2021-47426: bpf, s390: Fix potential memory leak about jit_data

• 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: bpf, s390: Fix potential memory leak about jit_data Make sure to free jit_data through kfree() in the error path.

Affected products

• Linux kernel: from 5.4 before 5.4.153; from 5.5 before 5.10.73; from 5.11 before 5.14.12; 5.15-rc1, 5.15-rc2, 5.15-rc3, 5.15-rc4 — fixed in 5.10.73, 5.14.12, 5.4.153

How to fix

Upgrade to a fixed version: Linux kernel 5.10.73, 5.14.12, 5.4.153. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
• https://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
• https://git.kernel.org/stable/c/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
• https://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2
• https://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
• https://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
• https://git.kernel.org/stable/c/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
• https://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2

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