An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
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Affected Vendors & Products
References
History
Tue, 04 Nov 2025 20:30:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2022-02-03T01:40:56.000Z
Updated: 2025-11-04T19:12:43.116Z
Reserved: 2021-10-18T00:00:00.000Z
Link: CVE-2021-42554
No data.
Status : Modified
Published: 2022-02-03T02:15:07.380
Modified: 2025-11-04T20:16:02.097
Link: CVE-2021-42554
No data.