Bug 2565618

Summary:	CVE-2026-114115 vyper: Vyper: Data corruption via miscompiled ternary array expressions [fedora-all]
Product:	[Fedora] Fedora	Reporter:	TEJ RATHI <trathi>
Component:	vyper	Assignee:	Peter Lemenkov <lemenkov>
Status:	ON_QA ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	lemenkov
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["364eb009-7748-4d8e-83db-8cabed217967"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2558004

Description TEJ RATHI 2026-11-03 07:41:08 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Vyper 0.3.8 through 0.5.0b1 contains a compiler miscompilation vulnerability in parse_IfExp that reads nested arrays with narrower inner bounds using the wider result type's memory layout. When a ternary selects the narrower array, inner arrays after the first are read at wrong offsets, causing contracts to silently store corrupted values or revert.

Comment 1 Fedora Update System 2026-11-03 07:46:21 UTC

FEDORA-2026-d7d3016c54 (vyper-0.4.3-9.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d7d3016c54

Comment 2 Fedora Update System 2026-11-03 07:46:25 UTC

FEDORA-2026-9e904c3eb3 (vyper-0.4.3-9.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9e904c3eb3

Comment 3 Fedora Update System 2026-11-03 07:46:29 UTC

FEDORA-2026-a6f4884fd9 (vyper-0.4.3-9.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a6f4884fd9

Comment 4 Fedora Update System 2026-11-04 02:44:34 UTC

FEDORA-2026-9e904c3eb3 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-9e904c3eb3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9e904c3eb3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-11-04 03:08:55 UTC

FEDORA-2026-a6f4884fd9 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-a6f4884fd9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a6f4884fd9

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-11-04 03:34:51 UTC

FEDORA-2026-d7d3016c54 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-d7d3016c54`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d7d3016c54

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.