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CVE-2024-38662

4.7 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: bpf: Allow delete from sockmap/sockhash only if update is allowed We have seen an influx of syzkaller reports where a BPF progr…

Published Jun 21, 2024EPSS 0.22%

Overview

CVE-2024-38662 is a medium-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, 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:

bpf: Allow delete from sockmap/sockhash only if update is allowed

We have seen an influx of syzkaller reports where a BPF program attached to

a tracepoint triggers a locking rule violation by performing a map_delete

on a sockmap/sockhash.

We don't intend to support this artificial use scenario. Extend the

existing verifier allowed-program-type check for updating sockmap/sockhash

to also cover deleting from a map.

From now on only BPF programs which were previously allowed to update

sockmap/sockhash can delete from these map types.

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/000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Refgit.kernel.org/stable/c/11e8ecc5b86037fec43d07b1c162e233e131b1d9Refgit.kernel.org/stable/c/29467edc23818dc5a33042ffb4920b49b090e63dRefgit.kernel.org/stable/c/6693b172f008846811f48a099f33effc26068e1eRefgit.kernel.org/stable/c/98e948fb60d41447fd8d2d0c3b8637fc6b6dc26dRefgit.kernel.org/stable/c/b81e1c5a3c70398cf76631ede63a03616ed1ba3cRefgit.kernel.org/stable/c/000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Refgit.kernel.org/stable/c/11e8ecc5b86037fec43d07b1c162e233e131b1d9Refgit.kernel.org/stable/c/29467edc23818dc5a33042ffb4920b49b090e63dRefgit.kernel.org/stable/c/6693b172f008846811f48a099f33effc26068e1e

How CyberStrike helps

Frequently asked questions

What is CVE-2024-38662?

CVE-2024-38662 is a medium-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-38662?

This vulnerability has a CVSS 3.1 base score of 4.7, 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-2024-38662?

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-2024-38662?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-38662 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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