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CVE-2024-42072

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix may_goto with negative offset.

Published Jul 29, 2024EPSS 0.23%

Overview

CVE-2024-42072 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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: Fix may_goto with negative offset.

Zac's syzbot crafted a bpf prog that exposed two bugs in may_goto.

The 1st bug is the way may_goto is patched. When offset is negative

it should be patched differently.

The 2nd bug is in the verifier:

when current state may_goto_depth is equal to visited state may_goto_depth

it means there is an actual infinite loop. It's not correct to prune

exploration of the program at this point.

Note, that this check doesn't limit the program to only one may_goto insn,

since 2nd and any further may_goto will increment may_goto_depth only

in the queued state pushed for future exploration. The current state

will have may_goto_depth == 0 regardless of number of may_goto insns

and the verifier has to explore the program until bpf_exit.

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/175827e04f4be53f3dfb57edf12d0d49b18fd939Refgit.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103Refgit.kernel.org/stable/c/175827e04f4be53f3dfb57edf12d0d49b18fd939Refgit.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42072?

CVE-2024-42072 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-42072?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-42072?

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-2024-42072?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42072 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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