This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-70455 →
ALPINE-CVE-2026-70455
rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt sho...
Original description
The description as published by the source.
rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string matching on long option names. Attackers can specify --zt=N with a large value to spawn an unbounded number of Zstandard worker threads on the receiver, exhausting available thread and memory resources.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Alpine:v3.21
rsync
[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.2"},{"fixed":"3.5.0-r0"}]}]
Alpine:v3.22
rsync
[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.2"},{"fixed":"3.5.0-r0"}]}]
Alpine:v3.23
rsync
[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.2"},{"fixed":"3.5.0-r0"}]}]
Alpine:v3.24
rsync
[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.2"},{"fixed":"3.5.0-r0"}]}]
References
- advisory security.alpinelinux.org