SB2026091745 - Use of Uninitialized Variable in Linux kernel kvm intc
Published: September 17, 2026
Security Bulletin ID
SB2026091745
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-89910)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.