UBUNTU-CVE-2026-33633

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Source
https://ubuntu.com/security/CVE-2026-33633
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33633
Upstream
  • CVE-2026-33633
Downstream
Related
Published
2026-05-19T18:16:00Z
Modified
2026-06-18T00:30:09.647910954Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in loadimagedata() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is triggered by a single APC graphics protocol command with a PNG format declaration (f=100) whose payload exceeds twice the initial buffer capacity. The overflow is attacker-controlled in both length and content, causing DoS and potentially escalation to RCE itself. This issue has been fixed in version 0.47.0.

References

Affected packages

Ubuntu:Pro:20.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.15.0-1ubuntu0.2+esm1

Affected versions

0.*
0.14.3-1
0.14.4-1
0.14.6-1
0.15.0-1
0.15.0-1build1
0.15.0-1ubuntu0.2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.15.0-1ubuntu0.2+esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.15.0-1ubuntu0.2+esm1",
            "binary_name": "kitty-terminfo"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json"

Ubuntu:Pro:22.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.21.2-1ubuntu0.22.04.1+esm1

Affected versions

0.*
0.19.3-1
0.21.2-1
0.21.2-1build1
0.21.2-1ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.21.2-1ubuntu0.22.04.1+esm1",
            "binary_name": "kitty"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json"

Ubuntu:Pro:24.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.32.2-1ubuntu0.4+esm1

Affected versions

0.*
0.26.5-3ubuntu2
0.26.5-5ubuntu1
0.31.0-3
0.31.0-4
0.32.2-1
0.32.2-1build2
0.32.2-1build3
0.32.2-1ubuntu0.1
0.32.2-1ubuntu0.2
0.32.2-1ubuntu0.3
0.32.2-1ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty-shell-integration"
        },
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty-terminfo"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json"

Ubuntu:25.10 / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.41.1-2+deb13u1build0.25.10.1

Affected versions

0.*
0.39.1-1
0.41.1-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1",
            "binary_name": "kitty-shell-integration"
        },
        {
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1",
            "binary_name": "kitty-terminfo"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json"

Ubuntu:Pro:26.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.45.0-1ubuntu0.1~esm1

Affected versions

0.*
0.41.1-2
0.43.1-1
0.44.0-1
0.45.0-1
0.45.0-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty-shell-integration"
        },
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty-terminfo"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33633.json"