What’s Vulnerable › Vulnerabilities

CVE-2022-48934: nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac()

• 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: 2024-08-22 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac() ida_simple_get() returns an id between min (0) and max (NFP_MAX_MAC_INDEX) inclusive. So NFP_MAX_MAC_INDEX (0xff) is a valid id. In order for the error handling path to work correctly, the 'invalid' value for 'ida_idx' should not be in the 0..NFP_MAX_MAC_INDEX range, inclusive. So set it to -1.

Affected products

• Linux kernel: from 5.1 before 5.4.182; from 5.5 before 5.10.103; from 5.11 before 5.15.26; from 5.16 before 5.16.12 — fixed in 5.10.103, 5.15.26, 5.16.12, 5.4.182

How to fix

Upgrade to a fixed version: Linux kernel 5.10.103, 5.15.26, 5.16.12, 5.4.182. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3a14d0888eb4b0045884126acc69abfb7b87814d
• https://git.kernel.org/stable/c/4086d2433576baf85f0e538511df97c8101e0a10
• https://git.kernel.org/stable/c/5ad5886f85b6bd893e3ed19013765fb0c243c069
• https://git.kernel.org/stable/c/9d8097caa73200710d52b9f4d9f430548f46a900
• https://git.kernel.org/stable/c/af4bc921d39dffdb83076e0a7eed1321242b7d87

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