UBUNTU-CVE-2026-121626

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Source

https://ubuntu.com/security/CVE-2026-121626

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121626.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121626

Upstream

CVE-2026-121626

Published

2026-11-03T18:17:00Z

Modified

2026-11-05T11:46:32Z

Severity

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

Summary

[none]

Details

GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in H46024Socket::ReceivedProbePacket() that allows remote attackers to cause a heap over-read by sending short probe packets. Attackers can send a short application-defined RTCP packet to the media port during H.460.24 probing to read past the heap allocation and possibly crash the gatekeeper.

References

Affected packages

Ubuntu:16.04:LTS / gnugk

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2:3.*

2:3.6-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gnugk",
            "binary_version": "2:3.6-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121626.json"

Ubuntu:18.04:LTS / gnugk