Kernel
CVE-2022-33908
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture TOCTOU prevention
|
| Impact | CVSS score of 7.0 (HIGH). Attack characteristics: local attack vector, high complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
DMA transactions which are targeted at input buffers used for the SdHostDriver software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-367. DMA transactions which are targeted at input buffers used for the SdHostDriver 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 SdHostDriver 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. 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-2022050 Affected products include: Insyde Kernel.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
DMA transactions which are targeted at input buffers used for the SdHostDriver 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 SdHostDriver 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. 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-2022050
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
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The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to cause file name coll
An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use
wall in util-linux through 2.40, often installed with setgid tty permissions, allows escape sequences to be sent to othe
Unspecified vulnerability in HP Operations Manager 9.20 on UNIX allows remote attackers to execute arbitrary code via un
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.2), this vulnerabil
Use of a untrusted pointer allows tampering with SMRAM and OS memory in SdHostDriver and SdMmcDevice Use of a untrusted
Incorrect pointer checks within the NvmExpressDxe driver can allow tampering with SMRAM and OS memory Incorrect pointer
SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. Rated high severity (CVSS 8.2), this vu
Manipulation of the input address in PnpSmm function 0x52 could be used by malware to overwrite SMRAM or OS kernel memor
Initialization function in PnpSmm could lead to SMRAM corruption when using subsequent PNP SMI functions Initialization
In UsbCoreDxe, untrusted input may allow SMRAM or OS memory tampering Use of untrusted pointers could allow OS or SMRAM
GitHub PoC
Exploit-DB