CVE-2022-33986
Medium
Description
DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056
SeverityMedium
CVSS6.4
Exploit probability—
ProductInsyde Kernel
PublishedNov 15, 2022
First seenNov 15, 2022
Weakness typeCWE-367CWE-367
How to fix
Update
- insyde kernel5.4.05.44.23, 5.5.05.52.23 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| insyde kernel | 5.4 ≤ v < 5.4.05.44.23, 5.5 ≤ v < 5.5.05.52.23 | 5.4.05.44.23, 5.5.05.52.23 |
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