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

Published

2026-03-18T18:16:00Z

Modified

2026-03-25T17:36:42Z

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
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@5.1.9-1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown 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_version": "5.1.9-1ubuntu0.1",
            "binary_name": "giflib-tools"
        },
        {
            "binary_version": "5.1.9-1ubuntu0.1",
            "binary_name": "libgif-dev"
        },
        {
            "binary_version": "5.1.9-1ubuntu0.1",
            "binary_name": "libgif7"
        }
    ]
}

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@5.1.9-2ubuntu0.1?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.1.9-2build1

5.1.9-2build2

5.1.9-2ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.1.9-2ubuntu0.1",
            "binary_name": "giflib-tools"
        },
        {
            "binary_version": "5.1.9-2ubuntu0.1",
            "binary_name": "libgif-dev"
        },
        {
            "binary_version": "5.1.9-2ubuntu0.1",
            "binary_name": "libgif7"
        }
    ]
}

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@5.2.2-1ubuntu1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.2.1-2.5

5.2.2-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.2.2-1ubuntu1",
            "binary_name": "giflib-tools"
        },
        {
            "binary_version": "5.2.2-1ubuntu1",
            "binary_name": "libgif-dev"
        },
        {
            "binary_version": "5.2.2-1ubuntu1",
            "binary_name": "libgif7"
        }
    ]
}

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@5.2.2-1ubuntu2?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.2.2-1ubuntu2

Ecosystem specific

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

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@5.1.4-0.3~16.04.1+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown 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_version": "5.1.4-0.3~16.04.1+esm1",
            "binary_name": "giflib-tools"
        },
        {
            "binary_version": "5.1.4-0.3~16.04.1+esm1",
            "binary_name": "libgif-dev"
        },
        {
            "binary_version": "5.1.4-0.3~16.04.1+esm1",
            "binary_name": "libgif7"
        }
    ]
}

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@5.1.4-2ubuntu0.1+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown 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_version": "5.1.4-2ubuntu0.1+esm1",
            "binary_name": "giflib-tools"
        },
        {
            "binary_version": "5.1.4-2ubuntu0.1+esm1",
            "binary_name": "libgif-dev"
        },
        {
            "binary_version": "5.1.4-2ubuntu0.1+esm1",
            "binary_name": "libgif7"
        }
    ]
}

Database specific

source

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