UBUNTU-CVE-2026-15811

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Source

https://ubuntu.com/security/CVE-2026-15811

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-15811

Upstream

CVE-2026-15811

Published

2026-07-21T06:16:00Z

Modified

2026-07-29T07:53:22Z

Severity

5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

References

Affected packages

Ubuntu:18.04:LTS / kronosnet

Package

Name: kronosnet
Purl: pkg:deb/ubuntu/kronosnet?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0-1

1.0-1build1

1.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libknet1",
            "binary_version": "1.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json"

Ubuntu:20.04:LTS / kronosnet

Package

Name: kronosnet
Purl: pkg:deb/ubuntu/kronosnet?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.8-2

1.13-1

1.14-1ubuntu2

1.15-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libknet1",
            "binary_version": "1.15-1ubuntu1"
        },
        {
            "binary_name": "libnozzle1",
            "binary_version": "1.15-1ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json"

Ubuntu:22.04:LTS / kronosnet

Package

Name: kronosnet
Purl: pkg:deb/ubuntu/kronosnet?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.20-4build1

1.22-1

1.23-2

1.23-2build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libknet1",
            "binary_version": "1.23-2build1"
        },
        {
            "binary_name": "libnozzle1",
            "binary_version": "1.23-2build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json"

Ubuntu:24.04:LTS / kronosnet

Package

Name: kronosnet
Purl: pkg:deb/ubuntu/kronosnet?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.26-1

1.28-1

1.28-2ubuntu1

1.28-2ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libknet1t64",
            "binary_version": "1.28-2ubuntu2"
        },
        {
            "binary_name": "libnozzle1t64",
            "binary_version": "1.28-2ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json"

Ubuntu:26.04:LTS / kronosnet

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.31-1ubuntu2

1.32-1ubuntu1

1.33-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libknet1t64",
            "binary_version": "1.33-1ubuntu1"
        },
        {
            "binary_name": "libnozzle1t64",
            "binary_version": "1.33-1ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15811.json"