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CVE-2024-27079

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix NULL domain on device release In the kdump kernel, the IOMMU operates in deferred_attach mode.

Published May 1, 2024CWE-476EPSS 0.24%

Overview

CVE-2024-27079 is a medium-severity vulnerability. It was published on May 1, 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:

iommu/vt-d: Fix NULL domain on device release

In the kdump kernel, the IOMMU operates in deferred_attach mode. In this

mode, info->domain may not yet be assigned by the time the release_device

function is called. It leads to the following crash in the crash kernel:

BUG: kernel NULL pointer dereference, address: 000000000000003c

...

RIP: 0010:do_raw_spin_lock+0xa/0xa0

...

_raw_spin_lock_irqsave+0x1b/0x30

intel_iommu_release_device+0x96/0x170

iommu_deinit_device+0x39/0xf0

__iommu_group_remove_device+0xa0/0xd0

iommu_bus_notifier+0x55/0xb0

notifier_call_chain+0x5a/0xd0

blocking_notifier_call_chain+0x41/0x60

bus_notify+0x34/0x50

device_del+0x269/0x3d0

pci_remove_bus_device+0x77/0x100

p2sb_bar+0xae/0x1d0

...

i801_probe+0x423/0x740

Use the release_domain mechanism to fix it. The scalable mode context

entry which is not part of release domain should be cle

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/333fe86968482ca701c609af590003bcea450e8fRefgit.kernel.org/stable/c/81e921fd321614c2ad8ac333b041aae1da7a1c6dRefgit.kernel.org/stable/c/333fe86968482ca701c609af590003bcea450e8fRefgit.kernel.org/stable/c/81e921fd321614c2ad8ac333b041aae1da7a1c6d

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27079?

CVE-2024-27079 is a medium-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-27079?

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-2024-27079?

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-2024-27079?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27079 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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