CVE-2023-22616

An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. The Save State register is not checked before use. The IhisiSmm driver does not check the value of a save state register before use. Due to insufficient input validation, an attacker can corrupt SMRAM.

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.37% chance of exploitation in the next 30 days, 29th percentile

Published

2023-04-12

Updated

2025-02-10

Proof-of-concept exploits (1)

• https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode/

Security advisories

• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2023022
• https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode

References

• CVE Record
• NVD entry