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CVE-2024-47719

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: iommufd: Protect against overflow of ALIGN() during iova allocation Userspace can supply an iova and uptr such that the target…

Published Oct 21, 2024CWE-787EPSS 0.23%

Overview

CVE-2024-47719 is a high-severity vulnerability. It was published on October 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:

iommufd: Protect against overflow of ALIGN() during iova allocation

Userspace can supply an iova and uptr such that the target iova alignment

becomes really big and ALIGN() overflows which corrupts the selected area

range during allocation. CONFIG_IOMMUFD_TEST can detect this:

WARNING: CPU: 1 PID: 5092 at drivers/iommu/iommufd/io_pagetable.c:268 iopt_alloc_area_pages drivers/iommu/iommufd/io_pagetable.c:268 [inline]

WARNING: CPU: 1 PID: 5092 at drivers/iommu/iommufd/io_pagetable.c:268 iopt_map_pages+0xf95/0x1050 drivers/iommu/iommufd/io_pagetable.c:352

Modules linked in:

CPU: 1 PID: 5092 Comm: syz-executor294 Not tainted 6.10.0-rc5-syzkaller-00294-g3ffea9a7a6f7 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024

RIP: 0010:iopt_alloc_area_pages drivers/iommu/iommufd/io_pagetable.c:268 [inline]

RIP: 0010:iopt_map_pages+0xf95/0x1050 drivers/iommu/iommufd/io_

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/72b78287ce92802e8ba678181a34b84ae844a112Refgit.kernel.org/stable/c/8f6887349b2f829a4121c518aeb064fc922714e4Refgit.kernel.org/stable/c/a6e9f9fd14772c0b23c6d1d7002d98f9d27cb1f6Refgit.kernel.org/stable/c/cd6dd564ae7d99967ef50078216929418160b30e

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47719?

CVE-2024-47719 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-47719?

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-2024-47719?

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-2024-47719?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47719 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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