UBUNTU-CVE-2026-34545

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Source

https://ubuntu.com/security/CVE-2026-34545

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-34545

Upstream

CVE-2026-34545

Withdrawn

2026-05-07T12:28:08Z

Published

2026-04-01T21:17:00Z

Modified

2026-05-07T14:00:22.637064Z

Severity

8.4 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point. In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.

References

Affected packages

Ubuntu:18.04:LTS

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@2.2.0-11.1ubuntu1.9?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.0-11ubuntu1

2.2.0-11.1ubuntu1

2.2.0-11.1ubuntu1.1

2.2.0-11.1ubuntu1.2

2.2.0-11.1ubuntu1.3

2.2.0-11.1ubuntu1.4

2.2.0-11.1ubuntu1.6

2.2.0-11.1ubuntu1.7

2.2.0-11.1ubuntu1.8

2.2.0-11.1ubuntu1.9

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.2.0-11.1ubuntu1.9",
            "binary_name": "libopenexr22"
        },
        {
            "binary_version": "2.2.0-11.1ubuntu1.9",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:24.04:LTS

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@3.1.5-5.1build3?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.5-5.1

3.1.5-5.1build1

3.1.5-5.1build2

3.1.5-5.1build3

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3.1.5-5.1build3",
            "binary_name": "libopenexr-3-1-30"
        },
        {
            "binary_version": "3.1.5-5.1build3",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:25.10

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@3.1.13-2?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.13-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3.1.13-2",
            "binary_name": "libopenexr-3-1-30"
        },
        {
            "binary_version": "3.1.13-2",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:26.04

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@3.1.13-2build1?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.13-2

3.1.13-2build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3.1.13-2build1",
            "binary_name": "libopenexr-3-1-30"
        },
        {
            "binary_version": "3.1.13-2build1",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:Pro:16.04:LTS

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@2.2.0-10ubuntu2.6+esm3?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.0-1ubuntu3

2.2.0-7ubuntu1

2.2.0-9ubuntu1

2.2.0-10ubuntu2

2.2.0-10ubuntu2.1

2.2.0-10ubuntu2.2

2.2.0-10ubuntu2.3

2.2.0-10ubuntu2.4

2.2.0-10ubuntu2.6

2.2.0-10ubuntu2.6+esm1

2.2.0-10ubuntu2.6+esm2

2.2.0-10ubuntu2.6+esm3

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.2.0-10ubuntu2.6+esm3",
            "binary_name": "libopenexr22"
        },
        {
            "binary_version": "2.2.0-10ubuntu2.6+esm3",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:Pro:20.04:LTS

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@2.3.0-6ubuntu0.5+esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.1-4.1ubuntu1

2.3.0-6

2.3.0-6build1

2.3.0-6ubuntu0.1

2.3.0-6ubuntu0.2

2.3.0-6ubuntu0.3

2.3.0-6ubuntu0.5

2.3.0-6ubuntu0.5+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.3.0-6ubuntu0.5+esm1",
            "binary_name": "libopenexr24"
        },
        {
            "binary_version": "2.3.0-6ubuntu0.5+esm1",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"

Ubuntu:Pro:22.04:LTS

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr@2.5.7-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.5.4-2

2.5.7-1

2.5.7-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.5.7-1ubuntu0.1~esm1",
            "binary_name": "libopenexr25"
        },
        {
            "binary_version": "2.5.7-1ubuntu0.1~esm1",
            "binary_name": "openexr"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34545.json"