SB2026091769 - Out-of-bounds write in Linux kernel usb extron-da-hd-4k-plus driver
Published: September 17, 2026
Security Bulletin ID
SB2026091769
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-89898)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to an out-of-bounds write in the extron_process_received function when processing malformed incoming data. A remote attacker can send malformed incoming data to compromise confidentiality, integrity, and availability.
Remediation
Install update from vendor's website.