SB2026091983 - Resource exhaustion in Linux kernel virtio driver
Published: September 19, 2026
Security Bulletin ID
SB2026091983
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-90127)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause device removal to hang.
The vulnerability exists due to missing timeout handling in virtio RTC alarm request handling when a pending alarm request does not receive a device response during surprise device removal. A local user can issue an alarm request while the virtio device stops responding to cause device removal to hang.
Remediation
Install update from vendor's website.