Bug 2515408 (CVE-2026-53798) - CVE-2026-53798 rsync: rsync: Privilege escalation via name-converter uid/gid mapping confusion
Summary: CVE-2026-53798 rsync: rsync: Privilege escalation via name-converter uid/gid ...
Keywords:
Status: NEW
Alias: CVE-2026-53798
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 15:51 UTC by OSIDB Bzimport
Modified: 2026-09-07 14:29 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-08-13 15:51:40 UTC
rsync tbefore 3.5.0 contains a privilege confusion vulnerability in the name-converter subprocess uid/gid mapping that allows local attackers to cause transferred files to be owned by root by influencing name-converter responses to return empty values. When the name-converter subprocess returns an empty response for a uid or gid lookup, rsync incorrectly interprets it as a successful resolution to uid/gid 0 (root) rather than a lookup failure, and if the name-converter also signals fake super-user status, rsync proceeds with root ownership assignments for transferred files.


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