Bug 2553370

Summary:	CVE-2026-110923 openssh: openssh: sftp can write outside the destination directory from a server-supplied path [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Ganesh <gnaik>
Component:	openssh	Assignee:	Dmitry Belyavskiy <dbelyavs>
Status:	CLOSED UPSTREAM	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	crypto-team, dbelyavs, dwalsh, jjelen, mattias.ellert, tm
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---	Flags:	fedora-admin-xmlrpc: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["6ac52248-899f-43b9-9ba8-5d088dc3159c"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-19 12:38:31 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:	2553028

Description Ganesh 2026-10-15 11:06:52 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.

A flaw was found in OpenSSH sftp. During a copy, a server-supplied empty directory entry, a path made only of slashes, or a ".." basename is used as the local destination. The write runs as the user who started sftp, and the server must be one that user chose to copy from. This is an incomplete fix for CVE-2026-59995. That fix only stopped interactive_loop from building a command string. It does not rewrite these destination names. Reserve a new CVE. Do not reuse CVE-2026-59995.