Bug 2515396 (CVE-2026-53793) - CVE-2026-53793 rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode
Summary: CVE-2026-53793 rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary ...
Keywords:
Status: NEW
Alias: CVE-2026-53793
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2521041 2521043 2521042
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 15:51 UTC by OSIDB Bzimport
Modified: 2026-09-14 18:02 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:67462 0 None None None 2026-09-14 18:01:53 UTC
Red Hat Product Errata RHSA-2026:67463 0 None None None 2026-09-14 18:02:42 UTC

Description OSIDB Bzimport 2026-08-13 15:51:20 UTC
rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper handling of the /./ notation or forge delta-basis transfers referencing xname paths that cross the /./ boundary to gain unauthorized read or write access to files outside the module's subtree.

Comment 2 Jon Orris 2026-09-14 18:01:51 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67462 https://access.redhat.com/errata/RHSA-2026:67462

Comment 3 Jon Orris 2026-09-14 18:02:40 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67463 https://access.redhat.com/errata/RHSA-2026:67463


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