Bug 2539217

Summary:	CVE-2026-88015 rclone: rclone: Denial of Service via crafted Range request against translated symlink [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Yadnyawalk Tale <ytale>
Component:	rclone	Assignee:	Mikel Olasagasti Uranga <mikel>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	go-sig, mikel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["e943f6e6-5094-4d65-9b08-230b16315e05"]}
Fixed In Version:	rclone-1.75.2-1.fc44 rclone-1.75.2-1.fc45	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-21 01:03:44 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:	2531541

Description Yadnyawalk Tale 2026-09-23 08:50:15 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.

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, backend/local with --links or links=true exposes symlink targets as .rclonelink objects, and fs.RangeOption.Decode can pass an unchecked positive Range start through Object.Open and openTranslatedLink. The function slices the target string as linkdst[offset:], so a Range start larger than the target length causes a deterministic slice-bounds panic when lib/http/serve exposes the object through HTTP or WebDAV. Go net/http normally recovers the panic per connection, causing request-level denial of service rather than terminating the entire process. This issue is fixed in version 1.75.1.

Comment 1 Fedora Update System 2026-10-11 09:37:38 UTC

FEDORA-2026-7aab7a2bbe (rclone-1.75.2-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-7aab7a2bbe

Comment 2 Fedora Update System 2026-10-13 01:56:41 UTC

FEDORA-2026-7aab7a2bbe has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-7aab7a2bbe`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7aab7a2bbe

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

Comment 3 Fedora Update System 2026-10-13 02:31:12 UTC

FEDORA-2026-e27d24d18c 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-e27d24d18c`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e27d24d18c

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

Comment 4 Fedora Update System 2026-10-21 01:03:44 UTC

FEDORA-2026-e27d24d18c (rclone-1.75.2-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2026-10-31 18:36:29 UTC

FEDORA-2026-7aab7a2bbe (rclone-1.75.2-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.