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CVE-2024-44949

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: parisc: fix a possible DMA corruption ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be possible that two unr…

Published Sep 4, 2024EPSS 0.23%

Overview

CVE-2024-44949 is a high-severity vulnerability. It was published on September 4, 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:

parisc: fix a possible DMA corruption

ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be

possible that two unrelated 16-byte allocations share a cache line. If

one of these allocations is written using DMA and the other is written

using cached write, the value that was written with DMA may be

corrupted.

This commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 -

that's the largest possible cache line size.

As different parisc microarchitectures have different cache line size, we

define arch_slab_minalign(), cache_line_size() and

dma_get_cache_alignment() so that the kernel may tune slab cache

parameters dynamically, based on the detected cache line size.

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/00baca74fb5879e5f9034b6156671301f500f8eeRefgit.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9fRefgit.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7fRefgit.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240fReflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-44949?

CVE-2024-44949 is a high-severity vulnerability. It was published on September 4, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-44949?

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-2024-44949?

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-2024-44949?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-44949 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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