Allocation of Resources Without Limits or Throttling Affecting rsync-daemon package, versions <0:3.2.7-1.el9_8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-RHEL9-RSYNCDAEMON-19980876
  • published20 Sept 2026
  • disclosed13 Aug 2026

Introduced: 13 Aug 2026

CVE-2026-70453  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade RHEL:9 rsync-daemon to version 0:3.2.7-1.el9_8 or higher.
This issue was patched in RHSA-2026:67462.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync-daemon package and not the rsync-daemon package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.

CVSS Base Scores

version 3.1