Fix CVE(s): CVE-2021-20298, CVE-2021-20299, CVE-2021-20304
* SECURITY UPDATE: Memory exhaustion in the B44 compressor - debian/patches/CVE-2021-20298.patch: size _tmpBuffer in elements rather than bytes in IlmImf/ImfB44Compressor.cpp. - CVE-2021-20298 * SECURITY UPDATE: Null dereference on multipart files with no parts - debian/patches/CVE-2021-20299.patch: require at least one header in IlmImf/ImfMultiPartInputFile.cpp. - CVE-2021-20299 * SECURITY UPDATE: Undefined right shift in hufDecode - debian/patches/CVE-2021-20304.patch: reject over-long Huffman code lengths in IlmImf/ImfHuf.cpp. - CVE-2021-20304
- Products
- libopenexr-dev, libopenexr22, openexr, openexr-doc
- Affected versions
- Not specified
- Fixed versions
- 2.2.0-11.1ubuntu1.9+tuxcare.els2
- CVEs
- CVE-2021-20298, CVE-2021-20299, CVE-2021-20304
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:42 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2021-20298, CVE-2021-20299, CVE-2021-20304
core-osv · Original sourcePublished 31 Aug 2026, 09:09 UTC
* SECURITY UPDATE: Memory exhaustion in the B44 compressor - debian/patches/CVE-2021-20298.patch: size _tmpBuffer in elements rather than bytes in IlmImf/ImfB44Compressor.cpp. - CVE-2021-20298 * SECURITY UPDATE: Null dereference on multipart files with no parts - debian/patches/CVE-2021-20299.patch: require at least one header in IlmImf/ImfMultiPartInputFile.cpp. - CVE-2021-20299 * SECURITY UPDATE: Undefined right shift in hufDecode - debian/patches/CVE-2021-20304.patch: reject over-long Huffman code lengths in IlmImf/ImfHuf.cpp. - CVE-2021-20304
osv:CLSA-2026-1788167338
libopenexr-dev
Fixed versions: 2.2.0-11.1ubuntu1.9+tuxcare.els2
libopenexr22
Fixed versions: 2.2.0-11.1ubuntu1.9+tuxcare.els2
openexr
Fixed versions: 2.2.0-11.1ubuntu1.9+tuxcare.els2
openexr-doc
Fixed versions: 2.2.0-11.1ubuntu1.9+tuxcare.els2
Complete source record
{
"id": "61ba76f6bcb8d9fd3167d1e2ec03ab1b8147d8e394847c501edbb81fd187abf9",
"url": "https://osv.dev/vulnerability/CLSA-2026-1788167338",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2021-20298, CVE-2021-20299, CVE-2021-20304",
"summary": "* SECURITY UPDATE: Memory exhaustion in the B44 compressor - debian/patches/CVE-2021-20298.patch: size _tmpBuffer in elements rather than bytes in IlmImf/ImfB44Compressor.cpp. - CVE-2021-20298 * SECURITY UPDATE: Null dereference on multipart files with no parts - debian/patches/CVE-2021-20299.patch: require at least one header in IlmImf/ImfMultiPartInputFile.cpp. - CVE-2021-20299 * SECURITY UPDATE: Undefined right shift in hufDecode - debian/patches/CVE-2021-20304.patch: reject over-long Huffman code lengths in IlmImf/ImfHuf.cpp. - CVE-2021-20304",
"evidence": "osv:CLSA-2026-1788167338",
"products": [
{
"name": {
"value": "libopenexr-dev",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.0-11.1ubuntu1.9+tuxcare.els2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libopenexr22",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.0-11.1ubuntu1.9+tuxcare.els2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openexr",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.0-11.1ubuntu1.9+tuxcare.els2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openexr-doc",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.0-11.1ubuntu1.9+tuxcare.els2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1788167338",
"aliases": [
"CLSA-2026-1788167338"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0-11.1ubuntu1.9+tuxcare.els2"
}
]
}
],
"package": {
"name": "libopenexr-dev",
"purl": "pkg:deb/tuxcare/libopenexr-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788167338.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0-11.1ubuntu1.9+tuxcare.els2"
}
]
}
],
"package": {
"name": "libopenexr22",
"purl": "pkg:deb/tuxcare/libopenexr22?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788167338.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0-11.1ubuntu1.9+tuxcare.els2"
}
]
}
],
"package": {
"name": "openexr",
"purl": "pkg:deb/tuxcare/openexr?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788167338.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0-11.1ubuntu1.9+tuxcare.els2"
}
]
}
],
"package": {
"name": "openexr-doc",
"purl": "pkg:deb/tuxcare/openexr-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788167338.json"
}
}
],
"modified": "2026-10-26T09:32:04.227753483Z",
"provider": "osv",
"upstream": [
"CVE-2021-20298",
"CVE-2021-20299",
"CVE-2021-20304"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1788167338.html",
"https://nvd.nist.gov/vuln/detail/CVE-2021-20298",
"https://nvd.nist.gov/vuln/detail/CVE-2021-20299",
"https://nvd.nist.gov/vuln/detail/CVE-2021-20304"
]
},
"related_cves": [
{
"value": "CVE-2021-20298",
"evidence": "/upstream"
},
{
"value": "CVE-2021-20299",
"evidence": "/upstream"
},
{
"value": "CVE-2021-20304",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449587,
"published_at": "2026-08-31T09:09:11+00:00"
}