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CVE-2026-89898

8.8 HIGH

Published 2026-09-16 · Updated 2026-09-16

AI risk analysis

Summary
This vulnerability allows for potential buffer overflow in the Linux kernel's CEC driver, which could lead to denial of service or potentially more severe consequences if exploited.
Exploitability
Exploitation requires malformed CEC data to be received, making it moderately difficult. The attacker must have the ability to send such data to the affected system.
Blast radius
If exploited, the impact could range from a denial of service to more severe consequences, depending on the system's configuration and the services running on it.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the fixed version 5.15.100 or later.
buffer-overflowkernellinuxcec

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

In the Linux kernel, the following vulnerability has been resolved: media: cec: extron-da-hd-4k-plus: add sanity check Add check to prevent overflowing msg.msg[] in case the incoming data is malformed.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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