Allocation of Resources Without Limits or Throttling Affecting openshell-gateway package, versions <0:0.1.2-0.2.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.3% (20th percentile)

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  • Snyk IDSNYK-RHEL10-OPENSHELLGATEWAY-20376893
  • published2 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-102821  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade RHEL:10 openshell-gateway to version 0:0.1.2-0.2.hum1 or higher.
This issue was patched in RHSA-2026:74586.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshell-gateway package and not the openshell-gateway package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Russh is a Rust SSH client and server library. Prior to 0.63.2, an authenticated remote peer can send SSH_MSG_KEXINIT without the required SSH_MSG_KEX_ECDH_INIT and then flood SSH_MSG_CHANNEL_OPEN messages while SessionKexState::InProgress prevents priority_receiver in russh/src/server/session.rs from being drained. The server continues processing network input and enqueues a ChannelOpenReply for each request on an unbounded channel, allowing one connection to grow memory until the process is terminated. This issue is fixed in version 0.63.2.

CVSS Base Scores

version 3.1