Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.24.2 | — |
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 | 3.24.2+dfsg-1 | — |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u2 | — |
| 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 | USN-8561-1 |
| Ubuntu 25.10 | freerdp3 | No fix yet | — |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 | USN-8561-1 |
| Ubuntu 22.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
| 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 | 2:3.10.3-5.el10_1.6 | RHSA-2026:19033, RHSA-2026:8458 |
| RHEL 9 | freerdp +4 | 2:2.11.7-1.el9_7.6 | RHSA-2026:19349, RHSA-2026:8457 |
| RHEL 8 | freerdp +4 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 |
Show 13 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_0.6 | RHSA-2026:11333 |
| RHEL 9.6 EUS | freerdp +4 | 2:2.11.7-1.el9_6.8 | RHSA-2026:9656 |
| RHEL 9.4 EUS | freerdp +4 | 2:2.11.2-1.el9_4.6 | RHSA-2026:10709 |
| RHEL 9.2 E4S | freerdp +2 | 2:2.4.1-6.el9_2.7 | RHSA-2026:11336 |
| RHEL 9.0 E4S | freerdp +2 | 2:2.4.1-3.el9_0.5 | RHSA-2026:11332 |
| RHEL 8.8 TUS | freerdp +3 | 2:2.2.0-12.el8_8.6 | RHSA-2026:12359 |
| RHEL 8.8 E4S | freerdp +3 | 2:2.2.0-12.el8_8.6 | RHSA-2026:12359 |
| RHEL 8.6 TUS | freerdp +3 | 2:2.2.0-7.el8_6.6 | RHSA-2026:12388 |
| RHEL 8.6 E4S | freerdp +3 | 2:2.2.0-7.el8_6.6 | RHSA-2026:12388 |
| RHEL 8.6 AUS | freerdp +3 | 2:2.2.0-7.el8_6.6 | RHSA-2026:12388 |
| RHEL 8.4 EUS Long Life | freerdp +3 | 2:2.2.0-13.el8_4 | RHSA-2026:11649 |
| RHEL 8.4 AUS | freerdp +3 | 2:2.2.0-13.el8_4 | RHSA-2026:11649 |
| RHEL 8.2 AUS | freerdp +3 | 2:2.0.0-46.rc4.el8_2.11 | RHSA-2026:11651 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 |
| AlmaLinux 9 | freerdp +4 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 |
| AlmaLinux 8 | freerdp +4 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-5.el10_1.6 | RLSA-2026:8458 |
| Rocky Linux 9 | freerdp | 2:2.11.7-1.el9_7.6 | RLSA-2026:8457 |
| Rocky Linux 8 | freerdp | 2:2.11.7-7.el8_10 | RLSA-2026:8945 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | freerdp | 3.10.3-150700.3.17.1 | SUSE-SU-2026:3562-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp | 3.24.2-1.1 | openSUSE-SU-2026:10633-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | freerdp | 3.24.2-r0 | — |
| Alpine v3.23 | freerdp | 3.24.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | freerdp +5 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 |
| Amazon Linux 2 | freerdp +4 | 2:2.11.7-1.amzn2.0.10 | ALAS2-2026-3238 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | freerdp +5 | 2:3.10.3-5.el10_1.6 | ELSA-2026-19033, ELSA-2026-8458 |
| Oracle Linux 9 | freerdp +4 | 2:2.11.7-1.el9_7.6 | ELSA-2026-19349, ELSA-2026-8457 |
| Oracle Linux 8 | freerdp +4 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 |
Advisories 31
- ALSA-2026:8458 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8457 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8945 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:9656 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:8945 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:8457 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:8458 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:19349 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:19033 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:12359 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:12388 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:11649 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:11651 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:11336 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:11333 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:11332 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:10709 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- USN-8561-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Oct 1, 2026
- WID-SEC-2026-0880 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- SUSE-SU-2026:3562-1 Security update for freerdp SUSE / openSUSE Security Updates · Aug 12, 2026
- ELSA-2026-19033 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- ELSA-2026-19349 Important: freerdp security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 26, 2026
- openSUSE-SU-2026:10633-1 freerdp-3.24.2-1.1 on GA media SUSE / openSUSE Security Updates · Apr 29, 2026
- RLSA-2026:8945 Important: freerdp security update Rocky Linux Security Advisories · Apr 23, 2026
- ELSA-2026-8945 Important: freerdp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 20, 2026
- RLSA-2026:8457 Important: freerdp security update Rocky Linux Security Advisories · Apr 19, 2026
- RLSA-2026:8458 Important: freerdp security update Rocky Linux Security Advisories · Apr 18, 2026
- ELSA-2026-8458 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8457 Important: freerdp security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ALAS2-2026-3238 Important: freerdp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 13, 2026
- ALAS2023-2026-1549 Important: freerdp security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 13, 2026