#VU60274 Untrusted Pointer Dereference in AhciBusDxe - CVE-2021-41837

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Main Vulnerability Database Vulnerabilities #VU60274

#VU60274 Untrusted Pointer Dereference in AhciBusDxe - CVE-2021-41837

Published: February 3, 2022


Vulnerability identifier: #VU60274
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-41837
CWE-ID: CWE-822
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
AhciBusDxe
Software vendor:
Insyde Software

Description

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 "current_ptr" to read or write or manipulate data into SMRAM.


Remediation

Install updates from vendor's website.

External links