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CVE-2025-37820

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xen-netfront: handle NULL returned by xdp_convert_buff_to_frame() The function xdp_convert_buff_to_frame() may return NULL if i…

Published May 8, 2025CWE-476EPSS 0.40%

Overview

CVE-2025-37820 is a high-severity vulnerability. It was published on May 8, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

xen-netfront: handle NULL returned by xdp_convert_buff_to_frame()

The function xdp_convert_buff_to_frame() may return NULL if it fails

to correctly convert the XDP buffer into an XDP frame due to memory

constraints, internal errors, or invalid data. Failing to check for NULL

may lead to a NULL pointer dereference if the result is used later in

processing, potentially causing crashes, data corruption, or undefined

behavior.

On XDP redirect failure, the associated page must be released explicitly

if it was previously retained via get_page(). Failing to do so may result

in a memory leak, as the pages reference count is not decremented.

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/5b83d30c63f9964acb1bc63eb8e670b9e0d2c240Refgit.kernel.org/stable/c/cc3628dcd851ddd8d418bf0c897024b4621ddc92Refgit.kernel.org/stable/c/cefd8a2e2de46209ce66e6d30c237eb59b6c5bfaRefgit.kernel.org/stable/c/d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9Refgit.kernel.org/stable/c/eefccd889df3b49d92e7349d94c4aa7e1ba19f6cReflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37820?

CVE-2025-37820 is a high-severity vulnerability. It was published on May 8, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-37820?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-37820?

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-2025-37820?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37820 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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