InsydeH2O up to 5.5 NvmExpressDxe toctou

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in InsydeH2O up to 5.5. This affects an unknown part of the component NvmExpressDxe. The manipulation results in toctou. This vulnerability was named CVE-2022-32955. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in InsydeH2O up to 5.5. Affected is an unknown code block of the component NvmExpressDxe. The manipulation with an unknown input leads to a toctou vulnerability. CWE is classifying the issue as CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the NvmExpressDxe buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated by using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the link data to SMRAM before checking it and verifying that all pointers are within the buffer.

The weakness was presented 02/15/2023. The advisory is available at insyde.com. This vulnerability is traded as CVE-2022-32955 since 06/10/2022. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-36021). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.6
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/10/2022 🔍
02/15/2023 +250 days 🔍
02/15/2023 +0 days 🔍
06/08/2026 +1209 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2022-32955 (🔍)
GCVE (CVE): GCVE-0-2022-32955
GCVE (VulDB): GCVE-100-221058
EUVD: 🔍

Entryinfo

Created: 02/15/2023 08:44
Updated: 06/08/2026 21:03
Changes: 02/15/2023 08:44 (36), 03/16/2023 01:36 (11), 03/19/2025 20:32 (16), 06/08/2026 21:03 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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