openexr: Fix of 2 CVEs
- CVE-2026-34380: fix signed 32-bit integer overflow in the PXR24 decoder bounds check, where (uint64_t) (w * 3) wrapped to a small positive value and allowed an out-of-bounds write through dout - CVE-2026-34378: fix signed 32-bit integer overflow in srcbuffer pointer arithmetic in the unpack_* routines, reached via an oversized dataWindow width
- Products
- openexr, openexr-devel, openexr-libs
- Affected versions
- Not specified
- Fixed versions
- 3.1.1-3.el9.tuxcare.els9
- CVEs
- CVE-2026-34378, CVE-2026-34380
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:59 UTC · Revision 1
Source evidence
- CVE-2026-34380: fix signed 32-bit integer overflow in the PXR24 decoder bounds check, where (uint64_t) (w * 3) wrapped to a small positive value and allowed an out-of-bounds write through dout - CVE-2026-34378: fix signed 32-bit integer overflow in srcbuffer pointer arithmetic in the unpack_* routines, reached via an oversized dataWindow width
osv:CLSA-2026-1785335342
openexr
Fixed versions: 3.1.1-3.el9.tuxcare.els9
openexr-devel
Fixed versions: 3.1.1-3.el9.tuxcare.els9
openexr-libs
Fixed versions: 3.1.1-3.el9.tuxcare.els9
Complete source record
{
"id": "a17cfe8aa18310ce009f2a1a87917a8b1bb854f7a4fb72dcd538004bffb6c78a",
"url": "https://osv.dev/vulnerability/CLSA-2026-1785335342",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "openexr: Fix of 2 CVEs",
"summary": "- CVE-2026-34380: fix signed 32-bit integer overflow in the PXR24 decoder bounds check, where (uint64_t) (w * 3) wrapped to a small positive value and allowed an out-of-bounds write through dout - CVE-2026-34378: fix signed 32-bit integer overflow in srcbuffer pointer arithmetic in the unpack_* routines, reached via an oversized dataWindow width",
"evidence": "osv:CLSA-2026-1785335342",
"products": [
{
"name": {
"value": "openexr",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.1-3.el9.tuxcare.els9",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openexr-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.1-3.el9.tuxcare.els9",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openexr-libs",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.1-3.el9.tuxcare.els9",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1785335342",
"aliases": [
"CLSA-2026-1785335342"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.1-3.el9.tuxcare.els9"
}
]
}
],
"package": {
"name": "openexr",
"purl": "pkg:rpm/tuxcare/openexr?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785335342.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.1-3.el9.tuxcare.els9"
}
]
}
],
"package": {
"name": "openexr-devel",
"purl": "pkg:rpm/tuxcare/openexr-devel?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785335342.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.1-3.el9.tuxcare.els9"
}
]
}
],
"package": {
"name": "openexr-libs",
"purl": "pkg:rpm/tuxcare/openexr-libs?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785335342.json"
}
}
],
"modified": "2026-10-26T09:43:59.547399298Z",
"provider": "osv",
"upstream": [
"CVE-2026-34378",
"CVE-2026-34380"
],
"references": [
"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1785335342.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34378",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34380"
]
},
"related_cves": [
{
"value": "CVE-2026-34378",
"evidence": "/upstream"
},
{
"value": "CVE-2026-34380",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450285,
"published_at": "2026-07-29T14:29:13+00:00"
}