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.
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Thu, 13 Aug 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | rsync 3.1.0 < 3.5.0 Signed Integer Overflow via MSG_IO_TIMEOUT | |
| Weaknesses | CWE-190 CWE-835 |
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-13T15:35:52.507Z
Reserved: 2026-08-04T14:52:23.815Z
Link: CVE-2026-70462
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Status : Received
Published: 2026-08-13T15:20:00.267
Modified: 2026-08-13T16:19:01.687
Link: CVE-2026-70462
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