CVE-2022-29276: Insyde Kernel

High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days.

SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. This issue was discovered by Insyde during security review. It was fixed in: Kernel 5.0: version 05.09.18 Kernel 5.1: version 05.17.18 Kernel 5.2: version 05.27.18 Kernel 5.3: version 05.36.18 Kernel 5.4: version 05.44.18 Kernel 5.5: version 05.52.18 https://www.insyde.com/security-pledge/SA-2022059

Affected products

• Insyde Kernel: from 5.0, before 5.0.05.09.18 (fixed in 5.0.05.09.18); from 5.1, before 5.1.05.17.18 (fixed in 5.1.05.17.18); from 5.2, before 5.2.05.27.18 (fixed in 5.2.05.27.18); from 5.3, before 5.3.05.36.18 (fixed in 5.3.05.36.18); from 5.4, before 5.4.05.44.18 (fixed in 5.4.05.44.18); from 5.5, before 5.5.05.52.18 (fixed in 5.5.05.52.18)

Published 2022-11-15. Last modified 2026-06-17.