What’s Vulnerable › Vulnerabilities

CVE-2022-49583: iavf: Fix handling of dummy receive descriptors

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: iavf: Fix handling of dummy receive descriptors Fix memory leak caused by not handling dummy receive descriptor properly. iavf_get_rx_buffer now sets the rx_buffer return value for dummy receive descriptors. Without this patch, when the hardware writes a dummy descriptor, iavf would not free the page allocated for the previous receive buffer. This is an unlikely event but can still happen. [Jesse: massaged commit message]

Affected products

• Linux kernel: from 5.1.20 before 5.2; from 5.2.3 before 5.4.208; from 5.5 before 5.10.134; from 5.11 before 5.15.58; from 5.16 before 5.18.15; 5.19-rc1, 5.19-rc2, 5.19-rc3, 5.19-rc4, 5.19-rc5, 5.19-rc6 (+1) — fixed in 5.10.134, 5.15.58, 5.18.15, 5.2, 5.4.208

How to fix

Upgrade to a fixed version: Linux kernel 5.10.134, 5.15.58, 5.18.15, 5.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2918419c06088f6709ceb543feb01752779ade4c
• https://git.kernel.org/stable/c/6edb818732fc05fda495f5b3a749bd1cee01398b
• https://git.kernel.org/stable/c/a9f49e0060301a9bfebeca76739158d0cf91cdf6
• https://git.kernel.org/stable/c/c6af94324911ef0846af1a5ce5e049ca736db34b
• https://git.kernel.org/stable/c/d88d59faf4e6f9cc4767664206afdb999b10ec77

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