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CVE-2024-33619

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: efi: libstub: only free priv.runtime_map when allocated priv.runtime_map is only allocated when efi_novamap is not set.

Published Jun 21, 2024CWE-908EPSS 0.25%

Overview

CVE-2024-33619 is a high-severity vulnerability. It was published on June 21, 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:

efi: libstub: only free priv.runtime_map when allocated

priv.runtime_map is only allocated when efi_novamap is not set.

Otherwise, it is an uninitialized value. In the error path, it is freed

unconditionally. Avoid passing an uninitialized value to free_pool.

Free priv.runtime_map only when it was allocated.

This bug was discovered and resolved using Coverity Static Analysis

Security Testing (SAST) by Synopsys, Inc.

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/4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974Refgit.kernel.org/stable/c/6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554Refgit.kernel.org/stable/c/9dce01f386c9ce6990c0a83fa14b1c95330b037eRefgit.kernel.org/stable/c/b8938d6f570f010a1dcdbfed3e5b5d3258c2a908Refgit.kernel.org/stable/c/4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974Refgit.kernel.org/stable/c/6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554Refgit.kernel.org/stable/c/9dce01f386c9ce6990c0a83fa14b1c95330b037eRefgit.kernel.org/stable/c/b8938d6f570f010a1dcdbfed3e5b5d3258c2a908

How CyberStrike helps

Frequently asked questions

What is CVE-2024-33619?

CVE-2024-33619 is a high-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-33619?

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-2024-33619?

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-2024-33619?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-33619 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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