Bug 2515407 (CVE-2026-70457) - CVE-2026-70457 rsync: rsync: Memory corruption via out-of-bounds write in size parsing
Summary: CVE-2026-70457 rsync: rsync: Memory corruption via out-of-bounds write in siz...
Keywords:
Status: NEW
Alias: CVE-2026-70457
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: 2026-09-14 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 18:01:54 UTC
Red Hat Product Errata RHSA-2026:67463 0 None None None 2026-09-14 18:02:37 UTC

Description OSIDB Bzimport 2026-08-13 15:51:40 UTC
rsync 3.2.3 before 3.5.0 contains an out-of-bounds write in parse_size_arg() where the return value of snprintf() is used directly as an index into a .bss-segment array without bounds checking. When snprintf truncates the formatted size string, the return value equals the number of characters that would have been written including the truncated portion, and this value may exceed the array length. The subsequent indexed write targets memory outside the intended array bounds, corrupting .bss memory.

Comment 2 Jon Orris 2026-09-14 18:01:52 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 18:02:36 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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