What’s Vulnerable › Vulnerabilities

CVE-2021-47529: iwlwifi: Fix memory leaks in error handling path

• 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: 2024-05-24 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: iwlwifi: Fix memory leaks in error handling path Should an error occur (invalid TLV len or memory allocation failure), the memory already allocated in 'reduce_power_data' should be freed before returning, otherwise it is leaking.

Affected products

• Linux kernel: from 5.14 before 5.15.7 — fixed in 5.15.7

How to fix

Upgrade to a fixed version: Linux kernel 5.15.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4768935c25403ba96e7a745645df24a51a774b7e
• https://git.kernel.org/stable/c/a571bc28326d9f3e13f5f2d9cda2883e0631b0ce
• https://git.kernel.org/stable/c/4768935c25403ba96e7a745645df24a51a774b7e
• https://git.kernel.org/stable/c/a571bc28326d9f3e13f5f2d9cda2883e0631b0ce

Get alerted when CVE-2021-47529 or the next vulnerability affects your stack