Use of Uninitialized Variable in Linux kernel - CVE-2026-89910
Published: September 17, 2026
Vulnerability identifier: #VU150367
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89910
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information and modify data.
The vulnerability exists due to use of an uninitialized stack variable in dmsintc_inject_irq() in the LoongArch KVM dmsintc component when injecting interrupts. A local user can trigger IRQ injection to disclose sensitive information and modify data.
Affected software
Linux kernel
How to mitigate CVE-2026-89910
Install security update from vendor's repository.