Description
A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | rsync | ≤ 3.3.0 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Discovery 2 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rsync | 3.3.0+ds1-3 | — |
| Debian 13 | rsync | 3.3.0+ds1-3 | — |
| Debian 12 | rsync | 3.2.7-1+deb12u1 | DSA-5843-1 |
| Debian 11 | rsync | 3.2.3-4+deb11u2 | DLA-4015-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | rsync | 3.2.7-1ubuntu1.1 | USN-7206-1 |
| Ubuntu 22.04 LTS | rsync | 3.2.7-0ubuntu0.22.04.3 | USN-7206-1 |
| Ubuntu 20.04 LTS | rsync | 3.1.3-8ubuntu0.8 | USN-7206-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | rsync | 3.1.2-2.1ubuntu1.6+esm1 | USN-7206-1 |
| Ubuntu Pro 16.04 LTS | rsync | 3.1.1-3ubuntu1.3+esm3 | USN-7206-1 |
| Ubuntu Pro 14.04 LTS | rsync | 3.1.0-2ubuntu0.4+esm1 | USN-7206-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | rsync +2 | 3.4.1-2.el10 | RHBA-2025:6470 |
| RHEL 9 | rsync +2 | 3.2.5-7.el9_8 | RHSA-2026:19368 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | rsync +1 | 3.2.5-3.el9_6.1 | RHSA-2026:20603 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | rsync +2 | 3.2.5-7.el9_8 | ALSA-2026:19368 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | rsync | 3.2.5-7.el9_8 | RLSA-2026:19368 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | rsync | 3.2.7-150600.3.8.1 | SUSE-SU-2025:0156-1 |
| SLES 15 SP5 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLES 15 SP4 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLES 15 SP3 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
| SLES 12 SP5 | rsync | 3.1.3-3.22.1 | SUSE-SU-2025:0166-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLES for SAP 15 SP4 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLES for SAP 15 SP3 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
| SLE Micro 6.1 | rsync | 3.3.0-slfo.1.1_3.1 | SUSE-SU-2025:20223-1 |
| SLE Micro 6.0 | rsync | 3.2.7-4.1 | SUSE-SU-2025:20122-1 |
| SLE Micro 5.5 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLE Micro 5.4 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLE Micro 5.3 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLE Micro 5.2 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
| SLE Micro 5.1 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
| SLE HPC 15 SP5 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLE HPC 15 SP4 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SLE HPC 15 SP3 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
| SUSE Manager Server 4.3 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SUSE Manager Proxy 4.3 | rsync | 3.2.3-150400.3.17.1 | SUSE-SU-2025:0165-1 |
| SUSE Enterprise Storage 7.1 | rsync | 3.2.3-150000.4.33.1 | SUSE-SU-2025:0157-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rsync | 3.4.1-1.1 | openSUSE-SU-2025:14665-1 |
| openSUSE Leap 15.6 | rsync | 3.2.7-150600.3.8.1 | SUSE-SU-2025:0156-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | rsync | 3.4.0-r0 | — |
| Alpine v3.23 | rsync | 3.4.0-r0 | — |
| Alpine v3.22 | rsync | 3.4.0-r0 | — |
| Alpine v3.21 | rsync | 3.4.0-r0 | — |
| Alpine v3.20 | rsync | 3.4.0-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | rsync | 3.4.0-r0 | — |
| Alpine v3.18 | rsync | 3.4.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rsync +1 | 3.4.0-1.amzn2023.0.2 | ALAS2023-2025-801 |
| Amazon Linux 2 | rsync | 3.1.2-11.amzn2.0.5 | ALAS2-2025-2731 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rsync | 3.4.1-1 | — |
| Azure Linux 2 (CBL-Mariner) | rsync | 3.4.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | rsync +2 | 3.2.5-7.el9_8.2 | ELSA-2026-19368 |
Advisories 22
- ALSA-2026:19368 Important: rsync security update AlmaLinux Security Advisories · Oct 29, 2026
- RHBA-2025:6470 Red Hat Bug Fix Advisory: rsync bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:20603 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:19368 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- WID-SEC-2025-0084 Rsync: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 4, 2026
- ELSA-2026-19368 Important: rsync security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 29, 2026
- USN-7206-1 Several security issues were fixed in rsync Ubuntu Security Notices (USN) · Jun 25, 2026
- RLSA-2026:19368 Important: rsync security update Rocky Linux Security Advisories · May 28, 2026
- SUSE-SU-2025:20122-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20223-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-5843-1 rsync - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4015-1 rsync - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:0166-1 Security update for rsync SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0165-1 Security update for rsync SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0156-1 Security update for rsync SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14665-1 rsync-3.4.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-2633 Aruba AOS-CX: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- VDE-2025-053 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · Jul 8, 2025
- SUSE-SU-2025:0157-1 Security update for rsync SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2025-2731 Important: rsync security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 16, 2025
- ALAS2023-2025-801 Important: rsync security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 16, 2025
- NCSC-2025-0015 Kwetsbaarheden verholpen in Rsync NCSC-NL (Netherlands) · Jan 15, 2025
References
- RHBA-2025:6470 vendor-advisory
- RHSA-2026:19368 vendor-advisory
- RHSA-2026:20603 vendor-advisory
- RHSA-2026:29197 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2024-12086 vdb-entry
- RHBZ#2330577 issue-tracking
- https://kb.cert.org/vuls/id/952657