Linux Kernel KVM SEV API cleanup

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (the affected version unknown). It has been classified as critical. This affects an unknown code of the component KVM SEV API. The manipulation with an unknown input leads to a cleanup vulnerability. CWE is classifying the issue as CWE-459. The software does not properly "clean up" and remove temporary or supporting resources after they have been used. This is going to have an impact on availability. The summary by CVE is:

A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization (SEV).

The weakness was presented 08/27/2022. The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-0171 since 01/10/2022. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/02/2022).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

Productinfo

Type

Vendor

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Cleanup
CWE: CWE-459
ATT&CK: Unknown

Local: No
Remote: Yes

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: Patch
Status: 🔍

0-Day Time: 🔒

Patch: git.kernel.org

Timelineinfo

01/10/2022 CVE reserved
08/27/2022 +228 days Advisory disclosed
08/27/2022 +0 days VulDB entry created
10/02/2022 +36 days VulDB last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-0171 (🔒)

Entryinfo

Created: 08/27/2022 07:43 AM
Updated: 10/02/2022 01:27 PM
Changes: 08/27/2022 07:43 AM (40), 10/02/2022 01:27 PM (11)
Complete: 🔍

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