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CVE-2026-70462 Details

Description

rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0	[email protected]	Release Notes
https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64	[email protected]	Vendor Advisory
https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-timeout	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]
CWE-835	Loop with Unreachable Exit Condition ('Infinite Loop')	[email protected]

Affected Products

Product	Versions
samba rsync	>= 3.1.0, < 3.5.0
CPE cpe:2.3:a:samba:rsync:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Nov 3, 2026	Initial Analysis	[email protected]
Oct 24, 2026	CVE Translated	[email protected]
Oct 23, 2026	CVE Translated	[email protected]
Aug 13, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	New CVE Received	[email protected]