CVE-2024-43819

5.5 · MEDIUM

Published Aug 17, 2024 linux CWE-476 EPSS 0.21% (11th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-43819 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 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:

kvm: s390: Reject memory region operations for ucontrol VMs

This change rejects the KVM_SET_USER_MEMORY_REGION and

KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM.

This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and

would thus result in a null pointer dereference further in.

Memory management needs to be performed in userspace and using the

ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP.

Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION

and KVM_SET_USER_MEMORY_REGION2.

[[email protected]: commit message spelling fix, subject prefix fix]

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 3.4, < 6.10.3	Affected

References

Ref git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6 Ref git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499

Frequently Asked Questions

What is CVE-2024-43819?

CVE-2024-43819 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-43819?

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-2024-43819?

How can CyberStrike help with CVE-2024-43819?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-43819 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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