Numeric Truncation Error in Linux kernel - CVE-2026-89450
Published: September 12, 2026
Vulnerability identifier: #VU149361
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89450
CWE-ID: CWE-197
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause stream ID aliasing.
The vulnerability exists due to improper validation of virtual stream ID width in the tegra241-cmdqv virtual interface SID_MATCH register programming when configuring a guest-provided virtual stream ID. A local privileged user can supply a virtual stream ID exceeding the SID_MATCH field width to cause stream ID aliasing.
The hardware matches only a 20-bit stream ID.
Affected software
Linux kernel
How to mitigate CVE-2026-89450
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3