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CVE-2024-42140

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: riscv: kexec: Avoid deadlock in kexec crash path If the kexec crash code is called in the interrupt context, the machine_kexec_…

Published Jul 30, 2024CWE-667EPSS 0.20%

Overview

CVE-2024-42140 is a medium-severity vulnerability. It was published on July 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, 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:

riscv: kexec: Avoid deadlock in kexec crash path

If the kexec crash code is called in the interrupt context, the

machine_kexec_mask_interrupts() function will trigger a deadlock while

trying to acquire the irqdesc spinlock and then deactivate irqchip in

irq_set_irqchip_state() function.

Unlike arm64, riscv only requires irq_eoi handler to complete EOI and

keeping irq_set_irqchip_state() will only leave this possible deadlock

without any use. So we simply remove it.

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/484dd545271d02d1571e1c6b62ea7df9dbe5e692Refgit.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943cRefgit.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155Refgit.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073dRefgit.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4Refgit.kernel.org/stable/c/484dd545271d02d1571e1c6b62ea7df9dbe5e692Refgit.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943cRefgit.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155Refgit.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073dRefgit.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42140?

CVE-2024-42140 is a medium-severity vulnerability. It was published on July 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-42140?

This vulnerability has a CVSS 3.1 base score of 5.5, 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-2024-42140?

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-2024-42140?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42140 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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