SB2021102146 - Privilege escalation in Linux kernel Bluetooth CMTP module
Published: October 21, 2021 Updated: June 14, 2023
Security Bulletin ID
SB2021102146
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double Free (CVE-ID: CVE-2021-34981)
CWE-ID: CWE-415 - Double Free
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the CMTP module in Linux kernel. A local user can trigger a double free error and execute arbitrary code on the system.
Remediation
Install update from vendor's website.