PT-2026-33280 · Rsync+3 · Rsync+3

Przemyslaw Frasunek · Published 2026-04-16 · Updated 2026-06-01 · CVE-2026-41035

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions rsync versions 3.0.1 through 3.4.1

Description The receive xattr() function relies on an untrusted length value during a qsort() call, which can lead to a use-after-free condition on the receiver side. This occurs when the victim runs the software with the -X (or --xattrs) option. While many common configurations on Linux are affected, non-Linux platforms are more widely susceptible.

Recommendations Update rsync to a version later than 3.4.1. As a temporary workaround, avoid running rsync with the -X or --xattrs option.

Exploit

Fix

Weakness Enumeration

CWE-130

Related Identifiers

ALSA-2026:17481

ALSA-2026:19152

ALSA-2026:19368

CVE-2026-41035

ECHO-96CC-2C47-FEAB

OESA-2026-2150

OPENSUSE-SU-2026:10775-1

RHSA-2026:17481

RHSA-2026:19152

USN-8283-1

USN-8349-1

Affected Products

Linuxmint

Rocky Linux

Ubuntu

Rsync

References · 52

• 🔥 https://openwall.com/lists/oss-security/2026/04/16/2 · Exploit
• https://osv.dev/vulnerability/ALSA-2026:17481 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-41035 · Security Note
• https://ubuntu.com/security/CVE-2026-43619 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43617 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:19152 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8283-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8283-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45232 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2150 · Vendor Advisory
• https://errata.almalinux.org/10/ALSA-2026-19152.html · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2026-17481.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43620 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-41035 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:19368 · Vendor Advisory