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CVE-2024-35987

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix loading 64-bit NOMMU kernels past the start of RAM commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear…

Published May 20, 2024EPSS 0.22%

Overview

CVE-2024-35987 is a high-severity vulnerability. It was published on May 20, 2024 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

riscv: Fix loading 64-bit NOMMU kernels past the start of RAM

commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear

mapping") added logic to allow using RAM below the kernel load address.

However, this does not work for NOMMU, where PAGE_OFFSET is fixed to the

kernel load address. Since that range of memory corresponds to PFNs

below ARCH_PFN_OFFSET, mm initialization runs off the beginning of

mem_map and corrupts adjacent kernel memory. Fix this by restoring the

previous behavior for NOMMU kernels.

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/aea702dde7e9876fb00571a2602f25130847bf0fRefgit.kernel.org/stable/c/b008e327fa570aca210f98c817757649bae56694Refgit.kernel.org/stable/c/ea6628e4e2353978af7e3b4ad4fdaab6149acf3dRefgit.kernel.org/stable/c/aea702dde7e9876fb00571a2602f25130847bf0fRefgit.kernel.org/stable/c/b008e327fa570aca210f98c817757649bae56694Refgit.kernel.org/stable/c/ea6628e4e2353978af7e3b4ad4fdaab6149acf3d

How CyberStrike helps

Frequently asked questions

What is CVE-2024-35987?

CVE-2024-35987 is a high-severity vulnerability. It was published on May 20, 2024 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2024-35987?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-35987?

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-2024-35987?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-35987 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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