insyde Kernel SdHostDriver buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in insyde Kernel. It has been rated as critical. Affected is an unknown function of the component SdHostDriver. This manipulation causes buffer overflow. The identification of this vulnerability is CVE-2022-33908. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in insyde Kernel (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component SdHostDriver. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

The weakness was shared 11/15/2022. It is possible to read the advisory at insyde.com. This vulnerability is known as CVE-2022-33908 since 06/17/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-36945). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/17/2022 🔍
11/15/2022 +151 days 🔍
11/15/2022 +0 days 🔍
06/12/2026 +1305 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2022-33908 (🔍)
GCVE (CVE): GCVE-0-2022-33908
GCVE (VulDB): GCVE-100-213619
EUVD: 🔍

Entryinfo

Created: 11/15/2022 08:52
Updated: 06/12/2026 03:42
Changes: 11/15/2022 08:52 (38), 12/18/2022 09:08 (12), 05/01/2025 04:42 (15), 06/12/2026 03:42 (1)
Complete: 🔍
Cache ID: 216::103

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