CVE-2026-98486
In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_re…
Overview
CVE-2026-98486 is a known-severity vulnerability. It was published on October 18, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
net: ena: fix MMIO read buffer leak on probe failure
ena_device_init() initializes the MMIO read mechanism with
ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA
buffer for MMIO read responses.
The normal removal path releases this buffer through
ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails
after ena_device_init() succeeds, the error path destroys the admin
resources and eventually frees ena_dev without destroying the MMIO read
request, leaving the coherent DMA buffer allocated.
Call ena_com_mmio_reg_read_request_destroy() in the probe error path
before releasing the remaining device resources.
This issue was found by manual code inspection.
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
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Frequently asked questions
What is CVE-2026-98486?
CVE-2026-98486 is a known-severity vulnerability. It was published on October 18, 2026.
How severe is CVE-2026-98486?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-98486?
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-2026-98486?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98486 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.