SB2026050623 - Use-after-free in Linux kernel bluetooth
Published: May 6, 2026
Security Bulletin ID
SB2026050623
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) Use-after-free (CVE-ID: CVE-2026-43059)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in Bluetooth MGMT command complete handlers when processing command completion paths. A local user can trigger concurrent pending command handling to cause a denial of service.
The issue involves list corruption in mgmt_add_adv_patterns_monitor_complete() and incorrect freeing of other pending mesh commands in set_mesh_complete().
Remediation
Install update from vendor's website.