UBUNTU-CVE-2026-121604

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Source
https://ubuntu.com/security/CVE-2026-121604
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121604
Upstream
Published
2026-11-03T17:18:00Z
Modified
2026-11-05T11:46:32Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

wlroots before 0.20.2 contains an out-of-bounds read vulnerability in read_surface_class() in xwayland/xwm.c that allows local X11 clients to leak compositor heap memory. Attackers can set a WM_CLASS property with a NUL-terminated instance but unterminated class, exposing over-read heap bytes as the window class or app_id over IPC.

References

Affected packages

Ubuntu:20.04:LTS / wlroots

Package

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

Affected ranges

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

Affected versions

0.*
0.7.0-2
0.10.0-1
0.10.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwlroots-examples",
            "binary_version": "0.10.0-2"
        },
        {
            "binary_name": "libwlroots5",
            "binary_version": "0.10.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json"

Ubuntu:22.04:LTS / wlroots

Package

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

Affected ranges

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

Affected versions

0.*
0.12.0-2ubuntu1
0.14.1-5
0.15.1-1
0.15.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwlroots-examples",
            "binary_version": "0.15.1-2"
        },
        {
            "binary_name": "libwlroots10",
            "binary_version": "0.15.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json"

Ubuntu:24.04:LTS / wlroots

Package

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

Affected ranges

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

Affected versions

0.*
0.16.2-3
0.17.1-2
0.17.1-2.1
0.17.1-2.1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwlroots-examples",
            "binary_version": "0.17.1-2.1build1"
        },
        {
            "binary_name": "libwlroots12t64",
            "binary_version": "0.17.1-2.1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json"

Ubuntu:26.10 / wlroots

Package

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

Affected ranges

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

Affected versions

0.*
0.19.2-1
0.19.3-1
0.20.1-1
0.20.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwlroots-0.20",
            "binary_version": "0.20.2-1"
        },
        {
            "binary_name": "libwlroots-0.20-examples",
            "binary_version": "0.20.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json"

Ubuntu:26.04:LTS / wlroots

Package

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

Affected ranges

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

Affected versions

0.*
0.18.2-3
0.19.1-1build1
0.19.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwlroots-0.19",
            "binary_version": "0.19.2-1"
        },
        {
            "binary_name": "libwlroots-0.19-examples",
            "binary_version": "0.19.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121604.json"