UBUNTU-CVE-2026-5186

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Source
https://ubuntu.com/security/CVE-2026-5186
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-5186
Upstream
  • CVE-2026-5186
Published
2026-03-31T08:15:00Z
Modified
2026-05-26T19:29:25.660241097Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A weakness has been identified in Nothings stb up to 2.30. This impacts the function stbi_loadgifmain of the file stbimage.h of the component Multi-frame GIF File Handler. This manipulation causes double free. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

References

Affected packages

Ubuntu:20.04:LTS / libstb

Package

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

Affected ranges

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

Affected versions

0.*
0.0~git20190817.1.052dce1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libstb0",
            "binary_version": "0.0~git20190817.1.052dce1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json"

Ubuntu:22.04:LTS / libstb

Package

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

Affected ranges

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

Affected versions

0.*
0.0~git20200713.b42009b+ds-1
0.0~git20210910.af1a5bc+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libstb0",
            "binary_version": "0.0~git20210910.af1a5bc+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json"

Ubuntu:24.04:LTS / libstb

Package

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

Affected ranges

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

Affected versions

0.*
0.0~git20230129.5736b15+ds-1
0.0~git20230129.5736b15+ds-1.1
0.0~git20230129.5736b15+ds-1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libstb0t64",
            "binary_version": "0.0~git20230129.5736b15+ds-1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json"

Ubuntu:25.10 / libstb

Package

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

Affected ranges

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

Affected versions

0.*
0.0~git20240715.f7f20f39fe4f+ds-1
0.0~git20241109.5c20573+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libstb0t64",
            "binary_version": "0.0~git20241109.5c20573+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json"

Ubuntu:26.04:LTS / libstb

Package

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

Affected ranges

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

Affected versions

0.*
0.0~git20241109.5c20573+ds-1
0.0~git20250907.fede005+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libstb0t64",
            "binary_version": "0.0~git20250907.fede005+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5186.json"