UBUNTU-CVE-2026-45696

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Source

https://ubuntu.com/security/CVE-2026-45696

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45696

Upstream

CVE-2026-45696

Published

2026-06-18T21:16:00Z

Modified

2026-06-30T18:18:15.457683414Z

Severity

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

Summary

[none]

Details

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, the HTJ2K (High-Throughput JPEG 2000) decoder, htundoimpl() in OpenEXRCore is vulnerable to a heap-buffer-overflow READ. The htundoimp function copies decoded pixels out of a per-line OpenJPH buffer using the EXR channel's declared width as the iteration count. The codestream embedded in the EXR chunk can declare different (smaller) tile/line dimensions than the EXR header advertises, but htundoimpl() does not validate this — it pulls width 32-bit samples from curline->i32[] without checking the OpenJPH line buffer's actual length. A crafted EXR file produces a 4-byte heap-buffer-overflow READ immediately after a buffer allocated by ojph::local::codestream::finalizealloc(). The bug is reachable through the standard scanline-decode entry point used by every consumer of exrdecodingrun/Imf::checkOpenEXRFile, including thumbnailers, asset pipelines, and the exrcheck utility — i.e. any application that opens untrusted EXR files. The result is a deterministic crash (DoS) and potential adjacent-heap leak. This issue has been fixed in version 3.4.12.

References

Affected packages

Ubuntu:25.10

openexr

Package

Name: openexr
Purl: pkg:deb/ubuntu/openexr?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_name": "libopenexr-3-1-30",
            "binary_version": "3.1.13-2"
        },
        {
            "binary_name": "openexr",
            "binary_version": "3.1.13-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:16.04:LTS

openexr

Package

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

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

2.2.0-10ubuntu2.6+esm4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr22",
            "binary_version": "2.2.0-10ubuntu2.6+esm4"
        },
        {
            "binary_name": "openexr",
            "binary_version": "2.2.0-10ubuntu2.6+esm4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:18.04:LTS

openexr

Package

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

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

2.2.0-11.1ubuntu1.9+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr22",
            "binary_version": "2.2.0-11.1ubuntu1.9+esm1"
        },
        {
            "binary_name": "openexr",
            "binary_version": "2.2.0-11.1ubuntu1.9+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:20.04:LTS

openexr

Package

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

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

2.3.0-6ubuntu0.5+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr24",
            "binary_version": "2.3.0-6ubuntu0.5+esm2"
        },
        {
            "binary_name": "openexr",
            "binary_version": "2.3.0-6ubuntu0.5+esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:22.04:LTS

openexr

Package

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

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

2.5.7-1ubuntu0.1~esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr25",
            "binary_version": "2.5.7-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "openexr",
            "binary_version": "2.5.7-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:24.04:LTS

openexr

Package

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

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

3.1.5-5.1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr-3-1-30",
            "binary_version": "3.1.5-5.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "openexr",
            "binary_version": "3.1.5-5.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"

Ubuntu:Pro:26.04:LTS

openexr

Package

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

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

3.1.13-2ubuntu0.26.04.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libopenexr-3-1-30",
            "binary_version": "3.1.13-2ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "openexr",
            "binary_version": "3.1.13-2ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45696.json"