PT-2022-21945 · Unknown · Nvmexpresslegacy

Published 2022-11-14 · Updated 2022-11-18 · CVE-2022-33983

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 NvmExpressLegacy driver versions prior to kernel 5.2: 05.27.25 NvmExpressLegacy driver versions prior to kernel 5.3: 05.36.25 NvmExpressLegacy driver versions prior to kernel 5.4: 05.44.25 NvmExpressLegacy driver versions prior to kernel 5.5: 05.52.25

Description DMA transactions targeted at input buffers used for the NvmExpressLegacy software SMI handler could cause SMRAM corruption through a Time-of-Check-to-Time-of-Use (TOCTOU) attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group.

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

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2022-33983

Affected Products

Nvmexpresslegacy

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2022-33983 · Security Note
• https://osv.dev/vulnerability/CVE-2022-33983 · Vendor Advisory
• https://insyde.com/security-pledge/SA-2022053 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory
• https://t.me/cibsecurity/52968 · Telegram Post