UBUNTU-CVE-2026-65976

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Source
https://ubuntu.com/security/CVE-2026-65976
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65976.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-65976
Upstream
Published
2026-08-17T21:16:00Z
Modified
2026-08-19T13:32:32.122447281Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Deskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.300, a connected peer can send repeated DCLP DataChunk messages to ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp, causing the server path in src/lib/server/ClientProxy1_6.cpp or client path in src/lib/client/ServerProxy.cpp to append data beyond the DataStart declared size and configured clipboard limit before DataEnd validation, exhausting receiver memory. This issue is fixed in continuous build 1.26.0.300.

References

Affected packages

Ubuntu:26.04:LTS / deskflow

Package

Name
deskflow
Purl
pkg:deb/ubuntu/deskflow?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.23.0+dfsg-1
1.24.0+dfsg-2
1.25.0+dfsg-2
1.25.0+dfsg-3
1.26.0+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "deskflow",
            "binary_version": "1.26.0+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65976.json"