CVE-2022-33984
First published: Mon Nov 14 2022(Updated: )
DMA transactions which are targeted at input buffers used for the SdMmcDevice software SMI handler 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 SdMmcDevice driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. This was fixed in kernel 5.2: 05.27.25, kernel 5.3: 05.36.25, kernel 5.4: 05.44.25, kernel 5.5: 05.52.25 https://www.insyde.com/security-pledge/SA-2022054
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde Kernel | >=5.2<5.2.05.27.25 | |
| Insyde Kernel | >=5.3<5.3.05.36.25 | |
| Insyde Kernel | >=5.4<5.4.05.44.25 | |
| Insyde Kernel | >=5.5<5.5.05.52.25 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-33984?
CVE-2022-33984 is a vulnerability that allows DMA transactions targeted at input buffers used for the SdMmcDevice software SMI handler to cause SMRAM corruption through a TOCTOU attack.
How does CVE-2022-33984 affect the Insyde Kernel software?
CVE-2022-33984 affects the Insyde Kernel software versions 5.2.05.27.25 to 5.5.05.52.25, allowing DMA transactions to cause SMRAM corruption.
What is the severity of CVE-2022-33984?
CVE-2022-33984 has a severity rating of high (7 out of 10).
How can I fix CVE-2022-33984?
Apply the necessary updates or patches provided by Insyde to fix CVE-2022-33984 in the Insyde Kernel software.
Where can I find more information about CVE-2022-33984?
You can find more information about CVE-2022-33984 in the Siemens Product CERT advisory and the Insyde security pledge.
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