CVE-2022-31243
First published: Mon Nov 14 2022(Updated: )
Update description and links DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver could cause SMRAM corruption through a TOCTOU attack.. "DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in Kernel 5.2: 05.27.21. Kernel 5.3: 05.36.21. Kernel 5.4: 05.44.21. Kernel 5.5: 05.52.21 https://www.insyde.com/security-pledge/SA-2022044
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde Kernel | >=5.2<5.2.05.27.21 | |
| Insyde Kernel | >=5.3<5.3.05.36.21 | |
| Insyde Kernel | >=5.4<5.4.05.44.21 | |
| Insyde Kernel | >=5.5<5.5.05.52.21 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-31243?
CVE-2022-31243 is a vulnerability that could cause SMRAM corruption through a TOCTOU attack.
How does CVE-2022-31243 impact the Insyde Kernel?
CVE-2022-31243 affects versions 5.2 to 5.5 of the Insyde Kernel.
What is the severity of CVE-2022-31243?
CVE-2022-31243 has a severity rating of 6.4, which is considered medium.
How can I fix CVE-2022-31243?
To fix CVE-2022-31243, it is recommended to update to a version of the Insyde Kernel that is not affected by this vulnerability.
Where can I find more information about CVE-2022-31243?
You can find more information about CVE-2022-31243 in the following references: [1](https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf), [2](https://www.insyde.com/security-pledge), [3](https://www.insyde.com/security-pledge/SA-2022044).
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