What’s Vulnerable › Vulnerabilities

CVE-2021-47150: net: fec: fix the potential memory leak in fec_enet_init()

• 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: 2024-03-25 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: net: fec: fix the potential memory leak in fec_enet_init() If the memory allocated for cbd_base is failed, it should free the memory allocated for the queues, otherwise it causes memory leak. And if the memory allocated for the queues is failed, it can return error directly.

Affected products

• Linux kernel: from 3.18 before 4.19.193; from 4.20 before 5.4.124; from 5.5 before 5.10.42; from 5.11 before 5.12.9; 5.13-rc1, 5.13-rc2, 5.13-rc3 — fixed in 4.19.193, 5.10.42, 5.12.9, 5.4.124

How to fix

Upgrade to a fixed version: Linux kernel 4.19.193, 5.10.42, 5.12.9, 5.4.124. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/15102886bc8f5f29daaadf2d925591d564c17e9f
• https://git.kernel.org/stable/c/20255d41ac560397b6a07d8d87dcc5e2efc7672a
• https://git.kernel.org/stable/c/32a1777fd113335c3f70dc445dffee0ad1c6870f
• https://git.kernel.org/stable/c/619fee9eb13b5d29e4267cb394645608088c28a8
• https://git.kernel.org/stable/c/8ee7ef4a57a9e1228b6f345aaa70aa8951c7e9cd
• https://git.kernel.org/stable/c/15102886bc8f5f29daaadf2d925591d564c17e9f
• https://git.kernel.org/stable/c/20255d41ac560397b6a07d8d87dcc5e2efc7672a
• https://git.kernel.org/stable/c/32a1777fd113335c3f70dc445dffee0ad1c6870f
• https://git.kernel.org/stable/c/619fee9eb13b5d29e4267cb394645608088c28a8
• https://git.kernel.org/stable/c/8ee7ef4a57a9e1228b6f345aaa70aa8951c7e9cd

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