Critical
openexr — security advisory
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
- Products
- openexr
- Affected versions
- 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, 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, 2.2.0-11ubuntu1, 2.2.0-1ubuntu3, 2.2.0-7ubuntu1, 2.2.0-9ubuntu1, 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, 2.5.4-2, 2.5.7-1, 2.5.7-1ubuntu0.1~esm1, 2.5.7-1ubuntu0.1~esm2, 3.1.13-2, 3.1.13-2build1, 3.1.13-2ubuntu0.26.04.1~esm1, 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, 3.4.6+ds-4ubuntu3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-42217
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:44 UTC · Revision 1
Source evidence
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
osv:UBUNTU-CVE-2026-42217
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
Complete source record
{
"id": "43d71df72a77644bd098c0c3c5d2c4ca985a12fbdc6c93477960e2a2ecdbf73a",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-42217",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-42217",
"summary": "OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.",
"evidence": "osv:UBUNTU-CVE-2026-42217",
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{
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{
"value": "2.3.0-6build1",
"evidence": "/affected/2/versions"
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{
"value": "2.3.0-6ubuntu0.1",
"evidence": "/affected/2/versions"
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{
"value": "2.3.0-6ubuntu0.2",
"evidence": "/affected/2/versions"
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{
"value": "2.3.0-6ubuntu0.3",
"evidence": "/affected/2/versions"
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{
"value": "2.3.0-6ubuntu0.5",
"evidence": "/affected/2/versions"
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{
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{
"value": "2.5.7-1",
"evidence": "/affected/3/versions"
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{
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{
"value": "3.1.5-5.1build1",
"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
},
{
"value": "3.1.5-5.1build3",
"evidence": "/affected/4/versions"
},
{
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{
"name": {
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"evidence": "/affected/5/package/name"
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{
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}
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},
{
"name": {
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},
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"severity": "critical",
"structured": {
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"aliases": [
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],
"metrics": [
{
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"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
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"2.2.0-10ubuntu2.4",
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"2.2.0-10ubuntu2.6+esm1",
"2.2.0-10ubuntu2.6+esm2",
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42217.json"
},
"ecosystem_specific": {
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},
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"package": {
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"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
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"database_specific": {
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},
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{
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},
{
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}
],
"modified": "2026-10-17T12:58:54.582317457Z",
"provider": "osv",
"upstream": [
"CVE-2026-42217"
],
"references": [
"https://ubuntu.com/security/CVE-2026-42217",
"https://www.cve.org/CVERecord?id=CVE-2026-42217",
"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3c67-4wwp-w52m",
"https://github.com/AcademySoftwareFoundation/openexr/pull/2378"
]
},
"related_cves": [
{
"value": "CVE-2026-42217",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359165,
"published_at": "2026-05-07T04:16:00+00:00"
}