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CVE-2024-27050

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: libbpf: Use OPTS_SET() macro in bpf_xdp_query() When the feature_flags and xdp_zc_max_segs fields were added to the libbpf bpf_…

Published May 1, 2024CWE-787EPSS 0.29%

Overview

CVE-2024-27050 is a high-severity vulnerability. It was published on May 1, 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:

libbpf: Use OPTS_SET() macro in bpf_xdp_query()

When the feature_flags and xdp_zc_max_segs fields were added to the libbpf

bpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro.

This causes libbpf to write to those fields unconditionally, which means

that programs compiled against an older version of libbpf (with a smaller

size of the bpf_xdp_query_opts struct) will have its stack corrupted by

libbpf writing out of bounds.

The patch adding the feature_flags field has an early bail out if the

feature_flags field is not part of the opts struct (via the OPTS_HAS)

macro, but the patch adding xdp_zc_max_segs does not. For consistency, this

fix just changes the assignments to both fields to use the OPTS_SET()

macro.

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/682ddd62abd4bdcee7584246903e7a2df005fe0dRefgit.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7Refgit.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5eRefgit.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07cRefgit.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0dRefgit.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7Refgit.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5eRefgit.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27050?

CVE-2024-27050 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-27050?

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-2024-27050?

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-2024-27050?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27050 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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