Improper Handling of Length Parameter Inconsistency Affecting rsync package, versions <3.1.3-8ubuntu0.9+esm1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-UBUNTU2004-RSYNC-16092595
  • published22 Apr 2026
  • disclosed16 Apr 2026

Introduced: 16 Apr 2026

CVE-2026-41035  (opens in a new tab)
CWE-130  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 rsync to version 3.1.3-8ubuntu0.9+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync package and not the rsync package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

References

CVSS Base Scores

version 3.1