Description
A malicious client acting as the receiver of an rsync file transfer can trigger an out of bounds read of a heap based buffer, via a negative array index. The
malicious
rsync client requires at least read access to the remote rsync module in order to trigger the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rsync | rsync | ≤ 3.4.1 | — |
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 | 3.4.1+ds1-7 | — |
| Debian 13 | rsync | 3.4.1+ds1-5+deb13u1 | — |
| Debian 12 | rsync | 3.2.7-1+deb12u4 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | rsync | 3.4.1+ds1-7 | — |
| Ubuntu 25.10 | rsync | 3.4.1+ds1-5ubuntu1.2 | — |
| Ubuntu 24.04 LTS | rsync | 3.2.7-1ubuntu1.4 | — |
| Ubuntu 22.04 LTS | rsync | 3.2.7-0ubuntu0.22.04.6 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | rsync | 3.1.3-8ubuntu0.9+esm1 | — |
| Ubuntu Pro 18.04 LTS | rsync | 3.1.2-2.1ubuntu1.6+esm3 | — |
| Ubuntu Pro 16.04 LTS | rsync | 3.1.1-3ubuntu1.3+esm5 | — |
| Ubuntu Pro 14.04 LTS | rsync | 3.1.0-2ubuntu0.4+esm3 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | rsync +2 | 3.4.1-2.el10_1.2 | RHSA-2026:6825 |
| RHEL 9 | rsync +2 | 3.2.5-3.el9_7.2 | RHSA-2026:6390 |
| RHEL 8 | rsync +1 | 3.1.3-24.el8_10 | RHSA-2026:6436 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | rsync +1 | 3.4.1-2.el10_0.2 | RHSA-2026:20696 |
| RHEL 9.6 EUS | rsync +1 | 3.2.5-3.el9_6.1 | RHSA-2026:20603 |
| RHEL 9.4 EUS | rsync +1 | 3.2.3-19.el9_4.3 | RHSA-2026:20604 |
| RHEL 9.2 E4S | rsync +1 | 3.2.3-19.el9_2.3 | RHSA-2026:20602 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | rsync-daemon +1 | 3.4.1-2.el10_1.2 | ALSA-2026:6825 |
| AlmaLinux 9 | rsync +2 | 3.2.5-3.el9_7.2 | ALSA-2026:6390 |
| AlmaLinux 8 | rsync +1 | 3.1.3-24.el8_10 | ALSA-2026:6436 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | rsync | 3.4.1-2.el10_1.2 | RLSA-2026:6825 |
| Rocky Linux 9 | rsync | 3.2.5-3.el9_7.2 | RLSA-2026:6390 |
| Rocky Linux 8 | rsync | 3.1.3-24.el8_10 | RLSA-2026:6436 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | rsync | 3.2.7-150600.3.14.1 | SUSE-SU-2025:4511-1 |
| SLES 12 SP5 | rsync | 3.1.3-3.34.1 | SUSE-SU-2026:0005-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | rsync | 3.4.1-160000.4.1 | SUSE-SU-2026:22015-1 |
| SLES 16.0 | rsync | 3.4.1-160000.4.1 | SUSE-SU-2026:22015-1 |
| SLE Micro 6.1 | rsync | 3.3.0-slfo.1.1_4.1 | SUSE-SU-2026:20058-1 |
| SLE Micro 6.0 | rsync | 3.2.7-5.1 | SUSE-SU-2026:20044-1 |
| SLE Micro 5.5 | rsync | 3.2.3-150400.3.26.1 | SUSE-SU-2026:0041-1 |
| SLE Micro 5.4 | rsync | 3.2.3-150400.3.26.1 | SUSE-SU-2026:0041-1 |
| SLE Micro 5.3 | rsync | 3.2.3-150400.3.26.1 | SUSE-SU-2026:0041-1 |
| SLE Micro 5.2 | rsync | 3.2.3-150000.4.39.1 | SUSE-SU-2026:0069-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rsync | 3.4.1-4.1 | openSUSE-SU-2025:15827-1 |
| openSUSE Leap 15.6 | rsync | 3.2.7-150600.3.14.1 | SUSE-SU-2025:4511-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | rsync | 3.4.1-r1 | — |
| Alpine v3.23 | rsync | 3.4.1-r1 | — |
| Alpine v3.22 | rsync | 3.4.1-r1 | — |
| Alpine v3.21 | rsync | 3.4.1-r1 | — |
| Alpine v3.20 | rsync | 3.4.1-r1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | rsync | 3.4.1-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rsync +1 | 3.4.0-1.amzn2023.0.3 | ALAS2023-2025-1302 |
| Amazon Linux 2 | rsync | 3.1.2-11.amzn2.0.6 | ALAS2-2026-3157 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rsync | 3.4.1-2 | — |
| Azure Linux 2 (CBL-Mariner) | rsync | 3.4.1-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | rsync +2 | 3.4.1-2.el10_1.2 | ELSA-2026-6825 |
| Oracle Linux 9 | rsync +2 | 3.2.5-3.el9_7.2 | ELSA-2026-6390 |
| Oracle Linux 8 | rsync +1 | 3.1.3-24.el8_10 | ELSA-2026-6436 |
Advisories 30
- WID-SEC-2026-2189 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:6390 Moderate: rsync security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:6825 Moderate: rsync security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:6436 Moderate: rsync security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:20696 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:20604 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:20602 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:20603 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- WID-SEC-2026-2253 IBM Security Verify Access: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- WID-SEC-2025-2637 Rsync: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Sep 3, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- RHSA-2026:6825 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2026:6390 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2026:6436 Red Hat Security Advisory: rsync security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- SUSE-SU-2026:22015-1 Security update for rsync SUSE / openSUSE Security Updates · Jun 9, 2026
- RLSA-2026:6825 Moderate: rsync security update Rocky Linux Security Advisories · Apr 9, 2026
- RLSA-2026:6436 Moderate: rsync security update Rocky Linux Security Advisories · Apr 9, 2026
- RLSA-2026:6390 Moderate: rsync security update Rocky Linux Security Advisories · Apr 7, 2026
- ELSA-2026-6825 Moderate: rsync security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Apr 7, 2026
- ELSA-2026-6436 Moderate: rsync security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 2, 2026
- ELSA-2026-6390 Moderate: rsync security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 1, 2026
- openSUSE-SU-2025:15827-1 rsync-3.4.1-4.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20058-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20044-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0005-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4511-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0041-1 Security update for rsync SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2-2026-3157 Moderate: rsync security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 5, 2026
- SUSE-SU-2026:0069-1 Security update for rsync SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2025-1302 Moderate: rsync security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Dec 8, 2025