Bug 2494448

Summary:	CVE-2026-39833 opkssh: golang.org/x/crypto/ssh/agent: Security bypass due to unenforced key confirmation [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	jkelly <jkelly>
Component:	opkssh	Assignee:	Till Hofmann <thofmann>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	go-sig, thofmann
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["28ae1c3c-f791-4399-96eb-f6f0b2d222a4"]}
Fixed In Version:	opkssh-0.15.0-2.el10_3 opkssh-0.15.0-2.el10_2	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-07-09 00:26:47 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 15:35:54 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 Fedora Update System 2026-07-02 21:14:18 UTC

FEDORA-EPEL-2026-229e7ad5a2 (opkssh-0.15.0-2.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-229e7ad5a2

Comment 2 Fedora Update System 2026-07-02 21:16:47 UTC

FEDORA-EPEL-2026-2dad2b9f74 (opkssh-0.15.0-2.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-2dad2b9f74

Comment 3 Fedora Update System 2026-07-03 01:19:38 UTC

FEDORA-EPEL-2026-2dad2b9f74 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-2dad2b9f74

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

Comment 4 Fedora Update System 2026-07-03 01:33:24 UTC

FEDORA-EPEL-2026-229e7ad5a2 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-229e7ad5a2

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

Comment 5 Fedora Update System 2026-07-09 00:26:47 UTC

FEDORA-EPEL-2026-229e7ad5a2 (opkssh-0.15.0-2.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-07-18 00:29:09 UTC

FEDORA-EPEL-2026-2dad2b9f74 (opkssh-0.15.0-2.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository.
If problem still persists, please make note of it in this bug report.