UBUNTU-CVE-2026-121943

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Source
https://ubuntu.com/security/CVE-2026-121943
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121943
Upstream
Published
2026-11-04T00:00:00Z
Modified
2026-11-05T11:46:32Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Irontec sngrep through 1.9.0 contains an out-of-bounds stack read vulnerability in sip_check_packet and sip_validate_packet caused by an off-by-one length check on 10240-byte SIP payloads. Remote attackers can send a crafted UDP or TCP SIP packet or supply a pcap file to crash sngrep or leak adjacent stack bytes into displayed SIP fields.

References

Affected packages

Ubuntu:16.04:LTS
sngrep

Package

Name
sngrep
Purl
pkg:deb/ubuntu/sngrep?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.4.1-1
1.*
1.0.0-1
1.1.0-1
1.2.0-1
1.2.0-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.2.0-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:18.04:LTS
sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.4.3-1
1.4.4-1
1.4.4-2
1.4.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.4.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:20.04:LTS
sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.4.6-1
1.4.6-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.4.6-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:22.04:LTS
sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.4.9-1
1.4.10-1
1.4.10-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.4.10-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:24.04:LTS
sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.7.0-2
1.8.0-1
1.8.0-1build1
1.8.0-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.8.0-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:26.04:LTS
sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.8.2-1
1.8.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.8.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"
Ubuntu:26.10
sngrep

Package

Name
sngrep
Purl
pkg:deb/ubuntu/sngrep?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.8.3-1
1.8.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sngrep",
            "binary_version": "1.8.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121943.json"