CVE-2026-29518
Fixed in a distro release EPSS <1%CVSS 7.0
Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.
Products: RsyncProject rsync, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4.22, Red Hat Discovery 2, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | rsync | 3.4.4-1.el10_2 |
| AlmaLinux 10 | rsync-daemon | 3.4.4-1.el10_2 |
| AlmaLinux 10 | rsync-rrsync | 3.4.4-1.el10_2 |
| AlmaLinux 8 | rsync | 3.1.3-27.el8_10 |
| AlmaLinux 8 | rsync-daemon | 3.1.3-27.el8_10 |
| AlmaLinux 9 | rsync | 3.2.5-7.el9_8.2 |
| AlmaLinux 9 | rsync-daemon | 3.2.5-7.el9_8.2 |
| AlmaLinux 9 | rsync-rrsync | 3.2.5-7.el9_8.2 |
| Alpine 3.20 | rsync | 3.4.3-r0 |
| Alpine 3.21 | rsync | 3.4.3-r0 |
| Alpine 3.22 | rsync | 3.4.3-r0 |
| Alpine 3.23 | rsync | 3.4.3-r0 |
| Alpine 3.24 | rsync | 3.4.3-r0 |
| Amazon Linux 2023 | rsync | 3.5.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | rsync-daemon | 3.5.1-1.amzn2023.0.1 |
| Debian 12 | rsync | 3.2.7-1+deb12u5 |
| Debian 13 | rsync | 3.4.1+ds1-5+deb13u3 |
| Debian 14 | rsync | 3.4.3+ds1-1 |
| Red Hat Enterprise Linux 10.2 | rsync | 0:3.4.4-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | rsync-daemon | 0:3.4.4-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | rsync-debuginfo | 0:3.4.4-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | rsync-debugsource | 0:3.4.4-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | rsync-rrsync | 0:3.4.4-1.el10_2 |
| Red Hat Enterprise Linux 8 | rsync | 0:3.1.3-27.el8_10 |
| Red Hat Enterprise Linux 8 | rsync-daemon | 0:3.1.3-27.el8_10 |
| Red Hat Enterprise Linux 8 | rsync-debuginfo | 0:3.1.3-27.el8_10 |
| Red Hat Enterprise Linux 8 | rsync-debugsource | 0:3.1.3-27.el8_10 |
| Red Hat Enterprise Linux 9 | rsync | 0:3.2.5-7.el9_8.2 |
| Red Hat Enterprise Linux 9 | rsync-daemon | 0:3.2.5-7.el9_8.2 |
| Red Hat Enterprise Linux 9 | rsync-debuginfo | 0:3.2.5-7.el9_8.2 |
| Red Hat Enterprise Linux 9 | rsync-debugsource | 0:3.2.5-7.el9_8.2 |
| Red Hat Enterprise Linux 9 | rsync-rrsync | 0:3.2.5-7.el9_8.2 |
| Rocky Linux 10 | rsync | 0:3.4.4-1.el10_2 |
| Rocky Linux 8 | rsync | 0:3.1.3-27.el8_10 |
| Rocky Linux 9 | rsync | 0:3.2.5-7.el9_8.2 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | rsync | 3.1.3-3.46.1 |
| SUSE Linux Enterprise Server 16.0 | rsync | 3.4.1-160000.4.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | rsync | 3.1.3-3.46.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | rsync | 3.4.1-160000.4.1 |
| Ubuntu 22.04 LTS | rsync | 3.2.7-0ubuntu0.22.04.7 |
| Ubuntu 22.04 LTS | rsync | 3.2.7-0ubuntu0.22.04.6 |
| Ubuntu 24.04 LTS | rsync | 3.2.7-1ubuntu1.5 |
| Ubuntu 24.04 LTS | rsync | 3.2.7-1ubuntu1.4 |
| Ubuntu 25.10 | rsync | 3.4.1+ds1-5ubuntu1.3 |
| Ubuntu 25.10 | rsync | 3.4.1+ds1-5ubuntu1.2 |
| Ubuntu 26.04 LTS | rsync | 3.4.1+ds1-7ubuntu0.2 |
| Ubuntu 26.04 LTS | rsync | 3.4.1+ds1-7ubuntu0.3 |
| Ubuntu Pro 14.04 LTS | rsync | 3.1.0-2ubuntu0.4+esm3 |
| Ubuntu Pro 14.04 LTS | rsync | 3.1.0-2ubuntu0.4+esm4 |
| Ubuntu Pro 16.04 LTS | rsync | 3.1.1-3ubuntu1.3+esm5 |
| Ubuntu Pro 16.04 LTS | rsync | 3.1.1-3ubuntu1.3+esm6 |
| Ubuntu Pro 18.04 LTS | rsync | 3.1.2-2.1ubuntu1.6+esm3 |
| Ubuntu Pro 18.04 LTS | rsync | 3.1.2-2.1ubuntu1.6+esm4 |
| Ubuntu Pro 20.04 LTS | rsync | 3.1.3-8ubuntu0.9+esm1 |
| Ubuntu Pro 20.04 LTS | rsync | 3.1.3-8ubuntu0.9+esm2 |
| openSUSE Tumbleweed | rsync | 3.4.3-1.1 |