UnratedFix available
clamav: Fix of 5 CVEs
Type: advisorySources: OSV
- CVE-2026-20213: fix Aspack-triggered PE rebuild integer overflow leading to heap buffer overflow write - CVE-2026-20214: fix FSG unpacker section loop underflow leading to out-of-bounds write - CVE-2026-20215: fix 7z substream count overflow leading to heap under-allocation and out-of-bounds write - CVE-2026-20216: enforce InstallShield extraction limits to prevent temporary storage exhaustion - CVE-2026-20217: fix PESpin unpacker cleanup bitmap tracking leading to invalid free and crash
- Products
- clamav, clamav-data, clamav-devel, clamav-doc, clamav-filesystem, clamav-freshclam, clamav-lib, clamav-milter, clamd
- Affected versions
- Not specified
- Fixed versions
- 1:1.4.3-1.el7.tuxcare.els2
- CVEs
- CVE-2026-20213, CVE-2026-20214, CVE-2026-20215, CVE-2026-20216, CVE-2026-20217
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:09 UTC · Revision 1
Source evidence
- CVE-2026-20213: fix Aspack-triggered PE rebuild integer overflow leading to heap buffer overflow write - CVE-2026-20214: fix FSG unpacker section loop underflow leading to out-of-bounds write - CVE-2026-20215: fix 7z substream count overflow leading to heap under-allocation and out-of-bounds write - CVE-2026-20216: enforce InstallShield extraction limits to prevent temporary storage exhaustion - CVE-2026-20217: fix PESpin unpacker cleanup bitmap tracking leading to invalid free and crash
osv:CLSA-2026-1787337364
clamav
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-data
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-devel
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-doc
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-filesystem
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-freshclam
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-lib
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamav-milter
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
clamd
Fixed versions: 1:1.4.3-1.el7.tuxcare.els2
Complete source record
{
"id": "898e8b95a5a49f32a070a46bae0afec65476226f728c613327171bfbe0ecaaba",
"url": "https://osv.dev/vulnerability/CLSA-2026-1787337364",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "clamav: Fix of 5 CVEs",
"summary": "- CVE-2026-20213: fix Aspack-triggered PE rebuild integer overflow leading to heap buffer overflow write - CVE-2026-20214: fix FSG unpacker section loop underflow leading to out-of-bounds write - CVE-2026-20215: fix 7z substream count overflow leading to heap under-allocation and out-of-bounds write - CVE-2026-20216: enforce InstallShield extraction limits to prevent temporary storage exhaustion - CVE-2026-20217: fix PESpin unpacker cleanup bitmap tracking leading to invalid free and crash",
"evidence": "osv:CLSA-2026-1787337364",
"products": [
{
"name": {
"value": "clamav",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-data",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-devel",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-doc",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-filesystem",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-freshclam",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-lib",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav-milter",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamd",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.4.3-1.el7.tuxcare.els2",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1787337364",
"aliases": [
"CLSA-2026-1787337364"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav",
"purl": "pkg:rpm/tuxcare/clamav?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-data",
"purl": "pkg:rpm/tuxcare/clamav-data?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-devel",
"purl": "pkg:rpm/tuxcare/clamav-devel?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-doc",
"purl": "pkg:rpm/tuxcare/clamav-doc?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-filesystem",
"purl": "pkg:rpm/tuxcare/clamav-filesystem?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-freshclam",
"purl": "pkg:rpm/tuxcare/clamav-freshclam?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-lib",
"purl": "pkg:rpm/tuxcare/clamav-lib?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamav-milter",
"purl": "pkg:rpm/tuxcare/clamav-milter?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.4.3-1.el7.tuxcare.els2"
}
]
}
],
"package": {
"name": "clamd",
"purl": "pkg:rpm/tuxcare/clamd?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1787337364.json"
}
}
],
"modified": "2026-10-26T09:31:48.758023211Z",
"provider": "osv",
"upstream": [
"CVE-2026-20213",
"CVE-2026-20214",
"CVE-2026-20215",
"CVE-2026-20216",
"CVE-2026-20217"
],
"references": [
"https://errata.tuxcare.com/els_os/centos7els/CLSA-2026-1787337364.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-20213",
"https://nvd.nist.gov/vuln/detail/CVE-2026-20214",
"https://nvd.nist.gov/vuln/detail/CVE-2026-20215",
"https://nvd.nist.gov/vuln/detail/CVE-2026-20216",
"https://nvd.nist.gov/vuln/detail/CVE-2026-20217"
]
},
"related_cves": [
{
"value": "CVE-2026-20213",
"evidence": "/upstream"
},
{
"value": "CVE-2026-20214",
"evidence": "/upstream"
},
{
"value": "CVE-2026-20215",
"evidence": "/upstream"
},
{
"value": "CVE-2026-20216",
"evidence": "/upstream"
},
{
"value": "CVE-2026-20217",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448523,
"published_at": "2026-08-21T18:36:17+00:00"
}