HIGH 7.1 NVD
CVE-2026-70462
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 connect
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.
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64
- https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-timeout
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-13 via NVD.
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