Bug 2494449

Summary:	CVE-2026-39833 complyctl: golang.org/x/crypto/ssh/agent: Security bypass due to unenforced key confirmation [fedora-all]
Product:	[Fedora] Fedora	Reporter:	jkelly <jkelly>
Component:	complyctl	Assignee:	Marcus Burghardt <maburgha>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	45	CC:	go-sig, maburgha
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["28ae1c3c-f791-4399-96eb-f6f0b2d222a4"]}
Fixed In Version:	complyctl-1.0.0-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-09 04:48:46 UTC	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:	2480683

Description jkelly 2026-06-29 15:35:58 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.

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

Comment 1 Aoife Moloney 2026-08-17 15:04:52 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Marcus Burghardt 2026-09-02 08:26:55 UTC

This CVE (GO-2026-5005) affects golang.org/x/crypto versions < 0.52.0.
complyctl currently vendors golang.org/x/crypto v0.55.0, which includes the fix.

Upstream fix (Go project):
  https://go.dev/issue/79436
  https://go.dev/cl/778642

Fixed in complyctl via:
  PR #670: feat: implement sigstore-go verification for policies and complypacks (#670)
  https://github.com/complytime/complyctl/pull/670

govulncheck confirms zero reachable vulnerabilities at symbol level.

Comment 3 Fedora Update System 2026-09-02 08:44:38 UTC

FEDORA-2026-f33ade2ba6 (complyctl-1.0.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f33ade2ba6

Comment 4 Fedora Update System 2026-09-03 01:37:54 UTC

FEDORA-2026-f33ade2ba6 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-f33ade2ba6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f33ade2ba6

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

Comment 5 Fedora Update System 2026-09-09 04:48:46 UTC

FEDORA-2026-f33ade2ba6 (complyctl-1.0.0-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.