SB2023041351 - Privilege escalation in Linux kernel udmabuf
Published: April 13, 2023 Updated: June 26, 2023
Security Bulletin ID
SB2023041351
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) Improper validation of array index (CVE-ID: CVE-2023-2008)
CWE-ID: CWE-129 - Improper Validation of Array Index
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect validation of array index within a fault handler in drivers/dma-buf/udmabuf.c. A local privileged user can execute arbitrary code with kernel privileges.
Remediation
Install update from vendor's website.