| Name | CVE-2026-22856 |
| Description | FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| freerdp2 (PTS) | bullseye | 2.3.0+dfsg1-2+deb11u1 | vulnerable |
| bullseye (security) | 2.3.0+dfsg1-2+deb11u3 | vulnerable | |
| bookworm | 2.11.7+dfsg1-6~deb12u1 | vulnerable | |
| freerdp3 (PTS) | trixie | 3.15.0+dfsg-2.1 | vulnerable |
| forky | 3.20.0+dfsg-1 | vulnerable | |
| sid | 3.20.2+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| freerdp2 | source | (unstable) | (unfixed) | |||
| freerdp3 | source | (unstable) | 3.20.2+dfsg-1 |
[trixie] - freerdp3 <no-dsa> (Minor issue)
[bookworm] - freerdp2 <no-dsa> (Minor issue)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv