SB2026050242 - Improper Check or Handling of Exceptional Conditions in Linux kernel bluetooth
Published: May 2, 2026
Security Bulletin ID
SB2026050242
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-2026-43022)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper exception handling in hci_cmd_sync_queue_once() when queuing command items. A local user can trigger duplicate queueing conditions to cause a denial of service.
The issue can lead to resource leaks when an already queued item is not reported to the caller.
Remediation
Install update from vendor's website.