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CVE-2026-98324

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dmaengine: pxa: fix double counting of the hw descriptors pxad_alloc_desc() was converted from kzalloc(struct_size(sw_…

Published Oct 6, 2026EPSS 0.13%

Overview

CVE-2026-98324 is a high-severity vulnerability. It was published on October 6, 2026 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:

dmaengine: pxa: fix double counting of the hw descriptors

pxad_alloc_desc() was converted from

kzalloc(struct_size(sw_desc, hw_desc, nb_hw_desc), GFP_NOWAIT)

to kzalloc_flex(), which sets the __counted_by() counter sw_desc->nb_desc

itself - but only where the compiler has __builtin_counted_by_ref(), so

from gcc 15.1 or clang 22.1 on. The loop below it still increments

nb_desc, which makes it come out doubled there and correct elsewhere.

nb_desc is what pxad_free_desc() iterates over and what

set_updater_desc() indexes from, so set it explicitly and drop the

increment. The error path has to lower it to the number of descriptors

allocated so far, otherwise pxad_free_desc() would free entries that were

never allocated.

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/1de93785f32b450e9eae1e4fcfb7d03eb49eb27eRefgit.kernel.org/stable/c/f6504be006aa4bb4bd26285f410a885c17920d65

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98324?

CVE-2026-98324 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-98324?

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-2026-98324?

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-2026-98324?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98324 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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