PT-2022-21900 · Insyde · Sdhostdriver

Published 2022-11-14 · Updated 2022-11-18 · CVE-2022-33908

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions SdHostDriver driver versions prior to kernel 5.2: 05.27.25 SdHostDriver driver versions prior to kernel 5.3: 05.36.25 SdHostDriver driver versions prior to kernel 5.4: 05.44.25 SdHostDriver driver versions prior to kernel 5.5: 05.52.25

Description The issue is related to DMA transactions targeted at input buffers used for the SdHostDriver software SMI handler, which could cause SMRAM corruption through a TOCTOU attack. This was discovered by Insyde engineering based on a description provided by Intel's iSTARE group.

Recommendations For versions prior to kernel 5.2: 05.27.25, update to kernel 5.2: 05.27.25 or later. For versions prior to kernel 5.3: 05.36.25, update to kernel 5.3: 05.36.25 or later. For versions prior to kernel 5.4: 05.44.25, update to kernel 5.4: 05.44.25 or later. For versions prior to kernel 5.5: 05.52.25, update to kernel 5.5: 05.52.25 or later.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2022-33908

Affected Products

Sdhostdriver

References · 4

• https://osv.dev/vulnerability/CVE-2022-33908 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-33908 · Security Note
• https://insyde.com/security-pledge/SA-2022050 · Vendor Advisory