rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the rrsync restricted shell wrapper that allows authenticated clients to escape enforced directory restrictions by substituting a symlink for a path component after validation but before transfer processing. Attackers can additionally leverage unrestricted flags such as --copy-unsafe-links, -D, and --log-file through rrsync to read or write files outside the permitted directory subtree.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade rsync-daemonUpgrade rsync-rrsyncUpgrade rsync | Oct 11, 2026 | Sep 14, 2026 |
| Alpine Linux | — | Upgrade rsync | Sep 1, 2026 | Aug 13, 2026 |
| Amazon_linux_2023 | — | Upgrade rsyncUpgrade rsync-debugsourceUpgrade rsync-daemonUpgrade rsync-debuginfo | Sep 30, 2026 | Aug 13, 2026 |
| Debian | — | Upgrade rsync | Sep 30, 2026 | Aug 13, 2026 |
| Freebsd | — | Upgrade rsync | Aug 27, 2026 | Aug 25, 2026 |
| Redhat_linux | — | Upgrade rsync-rrsyncUpgrade rsync-debugsourceUpgrade rsync-daemonUpgrade rsync-debuginfoUpgrade rsyncNo solution exists | Aug 24, 2026 | Aug 13, 2026 |
| Rocky_linux | — | Upgrade rsync-debuginfoUpgrade rsyncUpgrade rsync-debugsource | Sep 17, 2026 | Sep 15, 2026 |
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