| Name | CVE-2026-102823 |
| Description | Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and CHANNEL_REQUEST subtypes exit-status, exit-signal, and xon-xoff to public client::Handler callbacks without confirming that the ChannelId belongs to a channel the client opened and established. A malicious SSH server can send lifecycle events for predicted, unopened, unconfirmed, or released channel identifiers, causing application panics or corrupting command completion and exit-code tracking. This issue is fixed in version 0.63.1. |
| 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) |
| Debian Bugs | 1149646 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| rust-russh (PTS) | forky | 0.64.1-2 | fixed |
| sid | 0.65.1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| rust-russh | source | (unstable) | 0.64.1-1 | 1149646 |
https://github.com/Eugeny/russh/security/advisories/GHSA-47hw-gvq5-r2gm
Fixed by: https://github.com/Eugeny/russh/commit/3430fd26ecafc0dc3705210f5f39a9119fa22774 (v0.63.1)