ubuntu-cve-2026-65979
Vulnerability from osv_ubuntu
Published
2026-08-25 19:16
Modified
2026-09-02 16:22
Summary
Details
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.12, the HTJ2K decoder parses a header-length field (PLEN) from a chunk's compressed data but never checks that this value fits within the available buffer before using it. When decoding, it advances the codestream pointer by the attacker-supplied header size and passes the resulting offset and remaining length to the OpenJPH memory-input path, so a crafted value pushes the pointer past the end of the buffer and causes an out-of-bounds read. Because this field comes straight from attacker-controlled EXR chunk data, the flaw is reachable during normal decoding of an untrusted file. This issue is fixed in version 3.4.13.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@2.2.0-10ubuntu2.6+esm4?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "2.2.0-11.1ubuntu1.9+esm1"
},
{
"binary_name": "openexr",
"binary_version": "2.2.0-11.1ubuntu1.9+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@2.2.0-11.1ubuntu1.9+esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "libopenexr24",
"binary_version": "2.3.0-6ubuntu0.5+esm2"
},
{
"binary_name": "openexr",
"binary_version": "2.3.0-6ubuntu0.5+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@2.3.0-6ubuntu0.5+esm2?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "libopenexr25",
"binary_version": "2.5.7-1ubuntu0.1~esm2"
},
{
"binary_name": "openexr",
"binary_version": "2.5.7-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@2.5.7-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@3.1.5-5.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "3.1.13-2ubuntu0.26.04.1~esm1"
},
{
"binary_name": "openexr",
"binary_version": "3.1.13-2ubuntu0.26.04.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "openexr",
"purl": "pkg:deb/ubuntu/openexr@3.1.13-2ubuntu0.26.04.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.1.13-2",
"3.1.13-2build1",
"3.1.13-2ubuntu0.26.04.1~esm1"
]
}
],
"aliases": [],
"details": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.12, the HTJ2K decoder parses a header-length field (PLEN) from a chunk\u0027s compressed data but never checks that this value fits within the available buffer before using it. When decoding, it advances the codestream pointer by the attacker-supplied header size and passes the resulting offset and remaining length to the OpenJPH memory-input path, so a crafted value pushes the pointer past the end of the buffer and causes an out-of-bounds read. Because this field comes straight from attacker-controlled EXR chunk data, the flaw is reachable during normal decoding of an untrusted file. This issue is fixed in version 3.4.13.",
"id": "UBUNTU-CVE-2026-65979",
"modified": "2026-09-02T16:22:32Z",
"published": "2026-08-25T19:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-65979"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-65979"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3j9c-j7c9-x293"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/openexr/commit/c7af2d233b7b2a4452c11f26cf47584cc2b35721"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-65979"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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