Bug 2515389 (CVE-2026-53795)

Summary:	CVE-2026-53795 rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in rsync. A remote attacker can exploit this vulnerability by specifying an absolute path using the `--temp-dir` or `--link-dest` options. This bypasses the rename-confinement logic, allowing the attacker to write files to arbitrary locations outside the intended destination tree, potentially leading to unauthorized data modification or system disruption.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2520946, 2520947, 2520948
Bug Blocks:

Description OSIDB Bzimport 2026-08-13 15:51:14 UTC

rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside the destination tree, enabling attacker-controlled values to write files to arbitrary locations accessible to the rsync process.