UBUNTU-CVE-2026-116539

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-116539
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-116539
Upstream
Published
2026-10-26T16:17:00Z
Modified
2026-10-28T20:17:33Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap the non-application ring buffer write index. Remote TLS peers can drive handshake, renegotiation, or post-handshake messages into this buffer, triggering an out-of-bounds memcpy that crashes the JVM process.

References

Affected packages

Ubuntu:16.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.1.33.Fork6-1
1.1.33.Fork10-2
1.1.33.Fork14-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "1.1.33.Fork14-1"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "1.1.33.Fork14-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:18.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.1.33.Fork26-1
1.1.33.Fork26-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "1.1.33.Fork26-1build1"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "1.1.33.Fork26-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:20.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.0.20-1
2.0.28-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "2.0.28-1"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "2.0.28-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:22.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.0.28-1
2.0.28-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "2.0.28-1build1"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "2.0.28-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:24.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.0.28-1build1
2.0.28-1build2
2.0.28-1build3
2.0.28-1build4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "2.0.28-1build4"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "2.0.28-1build4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:26.04:LTS
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.0.28-1build4
2.0.28-1build5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "2.0.28-1build5"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "2.0.28-1build5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"
Ubuntu:26.10
netty-tcnative

Package

Name
netty-tcnative
Purl
pkg:deb/ubuntu/netty-tcnative?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.0.28-1build5
2.0.28-1build6

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnetty-tcnative-java",
            "binary_version":  "2.0.28-1build6"
        },
        {
            "binary_name":  "libnetty-tcnative-jni",
            "binary_version":  "2.0.28-1build6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116539.json"