Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2024-40945

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: iommu: Return right value in iommu_sva_bind_device() iommu_sva_bind_device() should return either a sva bond handle or an ERR_P…

Published Jul 12, 2024CWE-476EPSS 0.26%

Overview

CVE-2024-40945 is a medium-severity vulnerability. It was published on July 12, 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: Return right value in iommu_sva_bind_device()

iommu_sva_bind_device() should return either a sva bond handle or an

ERR_PTR value in error cases. Existing drivers (idxd and uacce) only

check the return value with IS_ERR(). This could potentially lead to

a kernel NULL pointer dereference issue if the function returns NULL

instead of an error pointer.

In reality, this doesn't cause any problems because iommu_sva_bind_device()

only returns NULL when the kernel is not configured with CONFIG_IOMMU_SVA.

In this case, iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA) will

return an error, and the device drivers won't call iommu_sva_bind_device()

at all.

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/2973b8e7d127754de9013177c41c0b5547406998Refgit.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12eRefgit.kernel.org/stable/c/6325eab6c108fed27f60ff51852e3eac0ba23f3fRefgit.kernel.org/stable/c/700f564758882db7c039dfba9443fe762561a3f8Refgit.kernel.org/stable/c/7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6Refgit.kernel.org/stable/c/89e8a2366e3bce584b6c01549d5019c5cda1205eRefgit.kernel.org/stable/c/cf34f8f66982a36e5cba0d05781b21ec9606b91eRefgit.kernel.org/stable/c/2973b8e7d127754de9013177c41c0b5547406998Refgit.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12eRefgit.kernel.org/stable/c/700f564758882db7c039dfba9443fe762561a3f8

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40945?

CVE-2024-40945 is a medium-severity vulnerability. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40945?

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-2024-40945?

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-2024-40945?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40945 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.

Related MEDIUM CVEs from 2024

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999