CVE-2022-32477

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5

High · published February 15, 2023

CVSS v3.1
7.0
EPSS
0%
Percentile
2.5
In the wild
Unconfirmed
What it is

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the FvbServicesRuntimeDxe shared 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 using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00132 · 2.5th percentile
Published
2023-02-15T00:00Z
EPSS history
Timeline
  • 15 FEB 00:00Z
    An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5
    cvelistv5