CVEvulnerability

CVE-2022-32955

7.0 HIGH Published 2023-02-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-02-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-367

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the NvmExpressDxe buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated by using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the link data to SMRAM before checking it and verifying that all pointers are within the buffer.

Affected configurations

• insyde insydeh2o (>= 5.0 < 5.2.05.27.27) • insyde insydeh2o (>= 5.3 < 5.3.05.36.27) • insyde insydeh2o (>= 5.4 < 5.4.05.44.27) • insyde insydeh2o (>= 5.5 < 5.5.05.52.27)

Related

Weakness · CWE (1)

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness

References