SB2022020315 - Privilege escalation in Insyde NvmExpressDxe driver
Published: February 3, 2022
Security Bulletin ID
SB2022020315
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Untrusted Pointer Dereference (CVE-ID: CVE-2021-41838)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to untrusted pointer dereference error in SMM (System Management Mode) branch that registers a SWSMI handler. A remote attacker can use this unsafe pointer "ptr" to read or write or manipulate data in the SMRAM
Remediation
Install update from vendor's website.