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CVE-2024-44984

10.0 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix double DMA unmapping for XDP_REDIRECT Remove the dma_unmap_page_attrs() call in the driver's XDP_REDIRECT code path.

Published Sep 4, 2024EPSS 0.74%

Overview

CVE-2024-44984 is a critical-severity vulnerability. It was published on September 4, 2024 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

bnxt_en: Fix double DMA unmapping for XDP_REDIRECT

Remove the dma_unmap_page_attrs() call in the driver's XDP_REDIRECT

code path. This should have been removed when we let the page pool

handle the DMA mapping. This bug causes the warning:

WARNING: CPU: 7 PID: 59 at drivers/iommu/dma-iommu.c:1198 iommu_dma_unmap_page+0xd5/0x100

CPU: 7 PID: 59 Comm: ksoftirqd/7 Tainted: G W 6.8.0-1010-gcp #11-Ubuntu

Hardware name: Dell Inc. PowerEdge R7525/0PYVT1, BIOS 2.15.2 04/02/2024

RIP: 0010:iommu_dma_unmap_page+0xd5/0x100

Code: 89 ee 48 89 df e8 cb f2 69 ff 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 31 d2 31 c9 31 f6 31 ff 45 31 c0 e9 ab 17 71 00 <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 31 d2 31 c9

RSP: 0018:ffffab1fc0597a48 EFLAGS: 00010246

RAX: 0000000000000000 RBX: ffff99ff838280c8 RCX: 0000000000000000

RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000

RBP: ffffab1fc0597a7

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/8baeef7616d5194045c5a6b97fd1246b87c55b13Refgit.kernel.org/stable/c/95a305ba259b685780ed62ea2295aa2feb2d6c0cRefgit.kernel.org/stable/c/fa4e6ae38574d0fc5596272bee64727d8ab7052b

How CyberStrike helps

Frequently asked questions

What is CVE-2024-44984?

CVE-2024-44984 is a critical-severity vulnerability. It was published on September 4, 2024 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2024-44984?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-44984?

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-2024-44984?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-44984 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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