What’s Vulnerable › Vulnerabilities

CVE-2021-47022: mt76: mt7615: fix memleak when mt7615_unregister_device()

• 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: 2024-02-28 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7615: fix memleak when mt7615_unregister_device() mt7615_tx_token_put() should get call before mt76_free_pending_txwi().

Affected products

• Linux kernel: from 5.10.21 before 5.10.37; from 5.11.4 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/107bcbb219ac84d885ac63b25246f8d33212bc47
• https://git.kernel.org/stable/c/4fa28c807da54c1d720b3cc12e48eb9bea1e2c8f
• https://git.kernel.org/stable/c/6c5b2b0c6e5a6ce2d8f9f85b8b72bfad60eaa506
• https://git.kernel.org/stable/c/8ab31da7b89f71c4c2defcca989fab7b42f87d71
• https://git.kernel.org/stable/c/107bcbb219ac84d885ac63b25246f8d33212bc47
• https://git.kernel.org/stable/c/4fa28c807da54c1d720b3cc12e48eb9bea1e2c8f
• https://git.kernel.org/stable/c/6c5b2b0c6e5a6ce2d8f9f85b8b72bfad60eaa506
• https://git.kernel.org/stable/c/8ab31da7b89f71c4c2defcca989fab7b42f87d71

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