Description
FreeRDP before 3.29.0 contains a client-side heap use-after-free in the async update message proxy for WINDOW_ICON_ORDER when AsyncUpdate is enabled (e.g. xfreerdp /async-update). In update_message_WindowIcon() a shallow CopyMemory() overwrites a freshly allocated lParam->iconInfo with the parser-owned windowIcon->iconInfo pointer. After the parser callback returns, update_recv_window_info_order() frees window_icon.iconInfo, but the queued async message still retains and later dispatches that stale pointer. A malicious or compromised RDP server sending a crafted RAIL Window Alternate Secondary Order with WINDOW_ORDER_ICON can trigger use-after-free, leading to memory corruption and client crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.29.0 | 3.29.0 |
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 | freerdp3 | 3.29.0+dfsg-1 | — |
| Debian 13 | freerdp3 | No fix yet | — |
| Debian 12 | freerdp2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 | — |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 | — |
| Ubuntu 22.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | freerdp2 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | freerdp +5 | 2:3.10.3-12.el10_2.8 | RHSA-2026:54486 |
| RHEL 9 | freerdp +4 | 2:2.11.7-7.el9_8.5 | RHSA-2026:54487 |
| RHEL 8 | freerdp +4 | 2:2.11.7-11.el8_10 | RHSA-2026:54485 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | freerdp +5 | 2:3.10.3-3.el10_0.11 | RHSA-2026:58711 |
| RHEL 9.6 EUS | freerdp +4 | 2:2.11.7-1.el9_6.12 | RHSA-2026:58713 |
| RHEL 9.4 E4S | freerdp +2 | 2:2.11.2-1.el9_4.10 | RHSA-2026:58710 |
| RHEL 9.2 E4S | freerdp +2 | 2:2.4.1-6.el9_2.11 | RHSA-2026:58712 |
| RHEL 8.8 TUS | freerdp +3 | 2:2.2.0-12.el8_8.10 | RHSA-2026:61251 |
| RHEL 8.8 E4S | freerdp +3 | 2:2.2.0-12.el8_8.10 | RHSA-2026:61251 |
| RHEL 8.6 EUS Long Life | freerdp +3 | 2:2.2.0-7.el8_6.11 | RHSA-2026:61250 |
| RHEL 8.6 AUS | freerdp +3 | 2:2.2.0-7.el8_6.11 | RHSA-2026:61250 |
| RHEL 8.4 EUS Long Life | freerdp +3 | 2:2.2.0-14.el8_4.2 | RHSA-2026:60173 |
| RHEL 8.4 AUS | freerdp +3 | 2:2.2.0-14.el8_4.2 | RHSA-2026:60173 |
| RHEL 7 ELS | freerdp +4 | 2.1.1-5.el7_9.11 | RHSA-2026:62401 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-12.el10_2.8 | ALSA-2026:54486 |
| AlmaLinux 9 | freerdp +4 | 2:2.11.7-7.el9_8.5 | ALSA-2026:54487 |
| AlmaLinux 8 | freerdp +4 | 2:2.11.7-11.el8_10 | ALSA-2026:54485 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.8 | RLSA-2026:54486 |
| Rocky Linux 9 | freerdp | 2:2.11.7-7.el9_8.5 | RLSA-2026:54487 |
| Rocky Linux 8 | freerdp | 2:2.11.7-11.el8_10 | RLSA-2026:54485 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | freerdp +5 | 2:3.6.3-1.amzn2023.0.15 | ALAS2023-2026-2111 |
| Amazon Linux 2 | freerdp +4 | 2:2.11.7-1.amzn2.0.14 | ALAS2-2026-3887 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | freerdp +5 | 2:3.10.3-12.el10_2.8 | ELSA-2026-54486 |
| Oracle Linux 9 | freerdp +4 | 2:2.11.7-7.el9_8.5 | ELSA-2026-54487 |
| Oracle Linux 8 | freerdp +4 | 2:2.11.7-11.el8_10 | ELSA-2026-54485 |
Advisories 23
- ALSA-2026:54487 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:54486 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:54485 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:62401 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:61251 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:61250 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:60173 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:58713 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:58711 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:58712 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:58710 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:54487 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:54485 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:54486 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- WID-SEC-2026-2384 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- ALAS2-2026-3887 Important: freerdp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 9, 2026
- ALAS2023-2026-2111 Important: freerdp security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 31, 2026
- RLSA-2026:54487 Important: freerdp security update Rocky Linux Security Advisories · Aug 14, 2026
- RLSA-2026:54485 Important: freerdp security update Rocky Linux Security Advisories · Aug 14, 2026
- RLSA-2026:54486 Important: freerdp security update Rocky Linux Security Advisories · Aug 13, 2026
- ELSA-2026-54486 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
- ELSA-2026-54487 Important: freerdp security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
- ELSA-2026-54485 Important: freerdp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
References
- GitHub Security Advisory (GHSA-34hq-hwjw-q8v3) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: FreeRDP before 3.29.0 Use-After-Free via WindowIcon async message third-party-advisory