Bug 2493519

Summary: CVE-2026-39835 hcloud: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate [fedora-all]
Product: [Fedora] Fedora Reporter: Isaiah Johnson <isjohnso>
Component: hcloudAssignee: Mikel Olasagasti Uranga <mikel>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: 45CC: fkolwa, go-sig, mikel
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f4cc6d1e-98c2-4117-9868-9c7bcba15ea3"]}
Fixed In Version: hcloud-1.67.0-1.fc43 hcloud-1.67.0-1.fc44 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-08-31 17:00:37 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: 2480680    

Description Isaiah Johnson 2026-06-26 14:44:49 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.

Comment 1 Aoife Moloney 2026-08-17 15:00:41 UTC
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Fedora Update System 2026-08-20 15:13:23 UTC
FEDORA-2026-dd9ec8b0c2 (hcloud-1.67.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-dd9ec8b0c2

Comment 3 Fedora Update System 2026-08-20 15:13:38 UTC
FEDORA-2026-b661d1a235 (hcloud-1.67.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b661d1a235

Comment 4 Fedora Update System 2026-08-21 05:42:21 UTC
FEDORA-2026-dd9ec8b0c2 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-dd9ec8b0c2`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-dd9ec8b0c2

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

Comment 5 Fedora Update System 2026-08-21 06:01:19 UTC
FEDORA-2026-b661d1a235 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-b661d1a235`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b661d1a235

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

Comment 6 Fedora Update System 2026-08-31 17:00:37 UTC
FEDORA-2026-b661d1a235 (hcloud-1.67.0-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2026-08-31 17:16:24 UTC
FEDORA-2026-dd9ec8b0c2 (hcloud-1.67.0-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.