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CVE-2026-31646

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() page_pool_create() can return an ERR_PTR on fai…

Published Apr 24, 2026CWE-476EPSS 0.16%

Overview

CVE-2026-31646 is a medium-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

page_pool_create() can return an ERR_PTR on failure. The return value

is used unconditionally in the loop that follows, passing the error

pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(),

which dereferences it, causing a kernel oops.

Add an IS_ERR check after page_pool_create() to return early on failure.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9Refgit.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19Refgit.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513Refgit.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409eRefgit.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31646?

CVE-2026-31646 is a medium-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31646?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-31646?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-31646?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31646 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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