Bug 2503279

Summary:	CVE-2025-47914 complyctl: SSH Agent servers: Denial of Service due to malformed messages [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Matteo Signorini <msignori>
Component:	complyctl	Assignee:	Marcus Burghardt <maburgha>
Status:	ON_QA ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	43	CC:	go-sig, maburgha
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["2fb8cc07-8c69-4333-b449-bc728c9ad939"]}
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:	2416000

Description Matteo Signorini 2026-07-21 12:02:07 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.

SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.

Comment 1 Marcus Burghardt 2026-09-02 08:33:30 UTC

This CVE (GO-2025-4135) affects golang.org/x/crypto versions < 0.45.0.
complyctl currently vendors golang.org/x/crypto v0.55.0, which includes the fix.

Upstream fix (Go project):
  https://go.dev/cl/721960
  https://go.dev/issue/76364

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 2 Marcus Burghardt 2026-09-02 08:34:48 UTC

*** Bug 2503577 has been marked as a duplicate of this bug. ***

Comment 3 Fedora Update System 2026-09-02 08:44:52 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 01:38:06 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.