Bug 2548173

Summary:	CVE-2026-93600 clevis-pin-trustee: rustls-webpki: URI Name Constraint Bypass via X.509 Certificate Misissue [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Ganesh <gnaik>
Component:	clevis-pin-trustee	Assignee:	Sergio Arroutbi <sarroutb>
Status:	ON_QA ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	sarroutb, scorreia
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["ab1878dc-6ee9-4241-bf74-8bb913187643"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
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Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2538296

Description Ganesh 2026-10-08 18:50:19 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.

rustls-webpki (rustls/webpki) versions 0.101.0 through 0.103.11 and 0.104.0-alpha releases before 0.104.0-alpha.6 ignore X.509 name constraints that apply to URI names, causing such constraints to be accepted rather than enforced. Because name constraints are restrictions on otherwise properly issued certificates, the flaw is only reachable after successful signature verification and requires a misissued certificate to exploit; the library also provides no API for asserting URI names, and URI name constraints are otherwise unimplemented. Versions 0.103.12 and 0.104.0-alpha.6 reject URI name constraints unconditionally.

Comment 1 Sergio Arroutbi 2026-10-09 12:53:07 UTC

Latest versions of Fedora already contain versions with the fix:
Release	Stable version	Version in testing
Fedora 46	rust-rustls-webpki-0.103.15-1.fc46	
Fedora 45	rust-rustls-webpki-0.103.15-1.fc45	
Fedora 44	rust-rustls-webpki-0.103.15-1.fc44

I will rebuild the package to link against fixed versions:
https://src.fedoraproject.org/rpms/clevis-pin-trustee/pull-request/4

Comment 2 Fedora Update System 2026-10-14 08:24:05 UTC

FEDORA-2026-d68095cc3f (clevis-pin-trustee-0.1.1-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d68095cc3f

Comment 3 Fedora Update System 2026-10-14 08:26:31 UTC

FEDORA-2026-a99da3001b (clevis-pin-trustee-0.1.1-2.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a99da3001b

Comment 4 Fedora Update System 2026-10-15 01:57:17 UTC

FEDORA-2026-d68095cc3f 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-d68095cc3f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d68095cc3f

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

Comment 5 Fedora Update System 2026-10-15 02:16:56 UTC

FEDORA-2026-a99da3001b 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-a99da3001b`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a99da3001b

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