UBUNTU-CVE-2026-41476

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Source

https://ubuntu.com/security/CVE-2026-41476

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41476.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-41476

Upstream

CVE-2026-41476

Published

2026-04-24T20:16:00Z

Modified

2026-05-20T16:25:41.439714790Z

Severity

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

Summary

[none]

Details

Deskflow is a keyboard and mouse sharing app. Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.

References

Affected packages

Ubuntu:25.10 / deskflow

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.20.1+dfsg-1

1.21.2+dfsg-1

1.22.0+dfsg-2

1.22.0+dfsg-3

1.22.0+dfsg-4

1.22.0+dfsg-6

1.22.0+dfsg-7

1.23.0+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "deskflow",
            "binary_version": "1.23.0+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41476.json"

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-2026-41476.json"