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CVE-2022-50060: octeontx2-af: Fix mcam entry resource leak

• 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: 2025-06-18 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Fix mcam entry resource leak The teardown sequence in FLR handler returns if no NIX LF is attached to PF/VF because it indicates that graceful shutdown of resources already happened. But there is a chance of all allocated MCAM entries not being freed by PF/VF. Hence free mcam entries even in case of detached LF.

Affected products

• Linux kernel: from 5.0 before 5.15.63; from 5.16 before 5.19.4 — fixed in 5.15.63, 5.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.15.63, 5.19.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3f8fe40ab7730cf8eb6f8b8ff412012f7f6f8f48
• https://git.kernel.org/stable/c/cc32347f48111eea8d0165538c92aca92ede83f6
• https://git.kernel.org/stable/c/dc5be2d4f9285efe0d16f1bf00250df91d05d809

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