Samba rsync up to 3.4.1 Qsort Call receive_xattr length length parameter

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Samba rsync up to 3.4.1. Affected by this issue is the function receive_xattr of the component Qsort Call Handler. Performing a manipulation of the argument length results in length parameter. This vulnerability is reported as CVE-2026-41035. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Samba rsync up to 3.4.1. This affects the function receive_xattr of the component Qsort Call Handler. The manipulation of the argument length with an unknown input leads to a length parameter vulnerability. CWE is classifying the issue as CWE-130. The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2026-41035 since 04/16/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 306775 (Linux Distros Unpatched Vulnerability : CVE-2026-41035), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202604-3436), Tenable (306775), EUVD (EUVD-2026-23215) and CERT Bund (WID-SEC-2026-1156). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source Rsync

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.4
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Length parameter
CWE: CWE-130 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 306775
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-41035

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2026 Advisory disclosed
04/16/2026 +0 days CVE reserved
04/16/2026 +0 days VulDB entry created
04/17/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: openwall.com
Status: Not defined

CVE: CVE-2026-41035 (🔒)
GCVE (CVE): GCVE-0-2026-41035
GCVE (VulDB): GCVE-100-357897
EUVD: 🔒
CERT Bund: WID-SEC-2026-1156 - Rsync: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
CNNVD: CNNVD-202604-3436 - Rsync 安全漏洞

Entryinfo

Created: 04/16/2026 09:17
Updated: 04/17/2026 20:28
Changes: 04/16/2026 09:17 (64), 04/16/2026 12:22 (1), 04/16/2026 13:53 (7), 04/17/2026 08:22 (2), 04/17/2026 20:28 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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