UBUNTU-CVE-2026-31814

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Source

https://ubuntu.com/security/CVE-2026-31814

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31814.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-31814

Upstream

CVE-2026-31814

Published

2026-03-13T19:54:00Z

Modified

2026-05-20T16:25:16Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.

References

Affected packages

Ubuntu:25.10 / rust-yamux

Package

Name: rust-yamux
Purl: pkg:deb/ubuntu/rust-yamux?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.13.3-4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "librust-yamux-dev",
            "binary_version": "0.13.3-4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31814.json"

Ubuntu:26.04:LTS / rust-yamux