Bug 2521799 - CVE-2026-53784 rsync: rsync: Unauthorized File Access via Symlink Module Root [fedora-all]
Summary: CVE-2026-53784 rsync: rsync: Unauthorized File Access via Symlink Module Root...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: rsync
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Michal Ruprich
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["ab3bcc32-5479-46aa-966b-d...
Depends On:
Blocks: CVE-2026-53784
TreeView+ depends on / blocked
 
Reported: 2026-08-24 10:41 UTC by Srikanth Balasubramanian
Modified: 2026-08-27 01:12 UTC (History)
3 users (show)

Fixed In Version: rsync-3.5.0-1.fc43
Clone Of:
Environment:
Last Closed: 2026-08-27 01:12:21 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Srikanth Balasubramanian 2026-08-24 10:41:28 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.

rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.

Comment 1 Fedora Update System 2026-08-26 06:55:06 UTC
FEDORA-2026-d6763b4c84 (rsync-3.5.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d6763b4c84

Comment 2 Fedora Update System 2026-08-27 01:12:21 UTC
FEDORA-2026-d6763b4c84 (rsync-3.5.0-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


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