SB2026091986 - Improper Check or Handling of Exceptional Conditions in Linux kernel vdpa vdpa_sim driver
Published: September 19, 2026
Security Bulletin ID
SB2026091986
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-90130)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of an initialization failure in the vDPA simulator cleanup path when creating a vDPA simulator and worker creation fails. A local user can trigger vDPA simulator initialization under this failure condition to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0
- https://git.kernel.org/stable/c/68b726b3a01fb02a68843781b17d05ef3d759987
- https://git.kernel.org/stable/c/bd670e5dfd2b01fd9692f61fa1456434c54026a4
- https://git.kernel.org/stable/c/ca6f3fa599cb764518df595368b743f856fdb516
- https://git.kernel.org/stable/c/feafa109f031ed111f7f968e447c13985db498e0