What’s Vulnerable › Vulnerabilities

CVE-2021-47287: driver core: auxiliary bus: Fix memory leak when driver_register() fail

• 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: driver core: auxiliary bus: Fix memory leak when driver_register() fail If driver_register() returns with error we need to free the memory allocated for auxdrv->driver.name before returning from __auxiliary_driver_register()

Affected products

• Linux kernel: from 5.11 before 5.13.6; 5.14-rc1, 5.14-rc2 — fixed in 5.13.6

How to fix

Upgrade to a fixed version: Linux kernel 5.13.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4afa0c22eed33cfe0c590742387f0d16f32412f3
• https://git.kernel.org/stable/c/ce5b3de58fc21303722df46551f7eb9a91afb409
• https://git.kernel.org/stable/c/4afa0c22eed33cfe0c590742387f0d16f32412f3
• https://git.kernel.org/stable/c/ce5b3de58fc21303722df46551f7eb9a91afb409

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