Out-of-bounds Write Affecting rsync-rrsync package, versions <0:3.5.0-3.el10_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-RHEL10-RSYNCRRSYNC-19809828
  • published15 Sept 2026
  • disclosed13 Aug 2026

Introduced: 13 Aug 2026

CVE-2026-70457  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:10 rsync-rrsync to version 0:3.5.0-3.el10_2 or higher.
This issue was patched in RHSA-2026:67463.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync-rrsync package and not the rsync-rrsync package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1