CVE-2021-39230
Error in JPNS kernel of Butter
MEDIUM
6.5
CVSS Score
Published: September 21, 2021 at 04:55 PM UTC
Updated: June 17, 2026 at 04:03 AM UTC
2 products affected across 2 vendorsButterButter
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%
Description
Butter is a system usability utility. Due to a kernel error the JPNS kernel is being discontinued. Affected users are recommend to update to the Trinity kernel. There are no workarounds.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.5
Affected range stops below 1.5, so it looks safe — our inference, not a vendor statement
v < 1.5
Affected range stops below 1.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/FrankEnderman/Butter/commit/a4fd717e848306f04f2823ea5f617e4da9f5bbdbx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/FrankEnderman/Butter/security/advisories/GHSA-4538-4g86-xf6jCVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo
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