CVE-2026-89898 Linux kernel media cec extron-da-hd-4k-plus - Denial of Service

Linux kernel media cec extron-da-hd-4k-plus contains a buffer overflow vulnerability caused by lack of sanity check on incoming data, letting attackers cause denial of service by sending malformed data.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.38% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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