UBUNTU-CVE-2026-26740

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Source
https://ubuntu.com/security/CVE-2026-26740
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-26740
Upstream
  • CVE-2026-26740
Downstream
Related
Published
2026-03-18T18:16:00Z
Modified
2026-07-22T20:45:27Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

References

Affected packages

Ubuntu:20.04:LTS
giflib

Package

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

Affected ranges

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

Affected versions

5.*
5.1.4-3ubuntu1
5.1.9-1
5.1.9-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.1.9-1ubuntu0.1"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.1.9-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:22.04:LTS
giflib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.1.9-2ubuntu0.3

Affected versions

5.*
5.1.9-2build1
5.1.9-2build2
5.1.9-2ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.1.9-2ubuntu0.3"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.1.9-2ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:24.04:LTS
giflib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.2.2-1ubuntu1.2

Affected versions

5.*
5.2.1-2.5
5.2.2-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.2.2-1ubuntu1.2"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.2.2-1ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:25.10
giflib

Package

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

Affected ranges

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

Affected versions

5.*
5.2.2-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.2.2-1ubuntu2"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.2.2-1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:26.04:LTS
giflib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.2.2-1ubuntu3.2

Affected versions

5.*
5.2.2-1ubuntu2
5.2.2-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.2.2-1ubuntu3.2"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.2.2-1ubuntu3.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:Pro:16.04:LTS
giflib

Package

Name
giflib
Purl
pkg:deb/ubuntu/giflib?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

4.*
4.1.6-11
5.*
5.1.1-0ubuntu1
5.1.1-0.1
5.1.1-0.2
5.1.2-0.1
5.1.2-0.2
5.1.4-0.3~16.04
5.1.4-0.3~16.04.1
5.1.4-0.3~16.04.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.1.4-0.3~16.04.1+esm1"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.1.4-0.3~16.04.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"
Ubuntu:Pro:18.04:LTS
giflib

Package

Name
giflib
Purl
pkg:deb/ubuntu/giflib?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

5.*
5.1.4-1
5.1.4-2
5.1.4-2ubuntu0.1
5.1.4-2ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "giflib-tools",
            "binary_version": "5.1.4-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "libgif7",
            "binary_version": "5.1.4-2ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26740.json"