Description
FreeRDP before 3.31.0 contains a null pointer dereference vulnerability in gdi_surface_bits when processing Surface Bits commands with NSCodec codec ID. A malicious RDP server can crash a FreeRDP client by sending a crafted Surface Bits command claiming to use NSCodec, even when the codec is disabled.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.31.0 | 3.31.0 |
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 | 3.31.0+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 | 3.31.0+dfsg-0ubuntu0.26.04.1 | — |
| Ubuntu 24.04 LTS | freerdp3 | 3.31.0+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_2.14 | RHSA-2026:98598, RHSA-2026:75570 |
| RHEL 9 | freerdp +4 | 2:2.11.7-7.el9_8.8 | RHSA-2026:98469, RHSA-2026:76755 |
| RHEL 8 | freerdp +4 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 |
Show 10 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_0.19 | RHSA-2026:99516 |
| RHEL 9.6 EUS | freerdp +4 | 2:2.11.7-1.el9_6.15 | RHSA-2026:99035 |
| RHEL 9.4 E4S | freerdp +2 | 2:2.11.2-1.el9_4.13 | RHSA-2026:99034 |
| RHEL 8.8 TUS | freerdp +3 | 2:2.2.0-12.el8_8.13 | RHSA-2026:93537 |
| RHEL 8.8 E4S | freerdp +3 | 2:2.2.0-12.el8_8.13 | RHSA-2026:93537 |
| RHEL 8.6 EUS Long Life | freerdp +3 | 2:2.2.0-7.el8_6.14 | RHSA-2026:93549 |
| RHEL 8.6 AUS | freerdp +3 | 2:2.2.0-7.el8_6.14 | RHSA-2026:93549 |
| RHEL 8.4 EUS Long Life | freerdp +3 | 2:2.2.0-14.el8_4.5 | RHSA-2026:93538 |
| RHEL 8.4 AUS | freerdp +3 | 2:2.2.0-14.el8_4.5 | RHSA-2026:93538 |
| RHEL 7 ELS | freerdp +4 | 2.1.1-5.el7_9.14 | RHSA-2026:93559 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 |
| AlmaLinux 9 | freerdp +4 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 |
| AlmaLinux 8 | freerdp +4 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.14 | RLSA-2026:98598, RLSA-2026:75570 |
| Rocky Linux 10 | libwinpr +4 | 2:3.32.2-1.el10_2 | RLSA-2026:98598 |
| Rocky Linux 9 | freerdp | 2:2.11.7-7.el9_8.8 | RLSA-2026:76755 |
| Rocky Linux 8 | freerdp | 2:2.11.7-14.el8_10 | RLSA-2026:76747 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | freerdp +5 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 |
| Oracle Linux 9 | freerdp +4 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 |
| Oracle Linux 8 | freerdp +4 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 |
Advisories 23
- RHSA-2026:98598 Red Hat Security Advisory: freerdp security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:99516 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:99034 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:99035 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:98469 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93537 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93559 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93549 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93538 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RLSA-2026:98598 Critical: freerdp security, bug fix, and enhancement update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-3057 FreeRDP: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:76755 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:75570 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:76747 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:76755 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:76747 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:75570 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RLSA-2026:76755 Important: freerdp security update Rocky Linux Security Advisories · Oct 8, 2026
- RLSA-2026:76747 Important: freerdp security update Rocky Linux Security Advisories · Oct 7, 2026
- ELSA-2026-76755 Important: freerdp security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 7, 2026
- RLSA-2026:75570 Important: freerdp security update Rocky Linux Security Advisories · Oct 6, 2026
- ELSA-2026-75570 Important: freerdp security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 6, 2026
- ELSA-2026-76747 Important: freerdp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 6, 2026
References
- GitHub Security Advisory (GHSA-ffjr-p229-hpch) vendor-advisory
- VulnCheck Advisory: FreeRDP before 3.31.0 NULL Pointer Dereference via NSCodec third-party-advisory