Bug 2515395 (CVE-2026-70456) - CVE-2026-70456 rsync: rsync: Heap Out-of-Bounds Write via crafted argument list
Summary: CVE-2026-70456 rsync: rsync: Heap Out-of-Bounds Write via crafted argument list
Keywords:
Status: NEW
Alias: CVE-2026-70456
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: 2520137 2520138 2520136
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 15:51 UTC by OSIDB Bzimport
Modified: 2026-09-30 20:28 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 18:01:49 UTC
Red Hat Product Errata RHSA-2026:67463 0 None None None 2026-09-14 18:02:42 UTC
Red Hat Product Errata RHSA-2026:71446 0 None None None 2026-09-29 21:33:41 UTC
Red Hat Product Errata RHSA-2026:74095 0 None None None 2026-09-30 20:28:00 UTC

Description OSIDB Bzimport 2026-08-13 15:51:19 UTC 
rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the argument count causes the argv allocation to be exactly full, the trailing NULL terminator is written one slot beyond the allocation boundary, corrupting adjacent heap memory.
Comment 2 Jon Orris 2026-09-14 18:01:48 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 18:02:41 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
Comment 4 Jon Orris 2026-09-29 21:33:39 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.22

Via RHSA-2026:71446 https://access.redhat.com/errata/RHSA-2026:71446
Comment 5 Jon Orris 2026-09-30 20:27:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:74095 https://access.redhat.com/errata/RHSA-2026:74095
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