openssl: Fix of 5 CVEs
- CVE-2026-34180: fix heap buffer over-read in ASN.1 content parsing caused by truncating a long content length to int - CVE-2026-7383: fix heap buffer overflow in ASN1_mbstring_ncopy() caused by signed integer overflow when computing the output length - CVE-2026-42766: fix NULL pointer dereference when keyDerivationAlgorithm is absent in CMS PasswordRecipientInfo - CVE-2026-9076: fix out-of-bounds read in kek_unwrap_key() check-byte validation for KEK ciphers with a block size below 4 octets - CVE-2026-42768: enforce implicit rejection for CMS and PKCS#7 RSA PKCS#1 v1.5 decryption
- Products
- openssl, openssl-devel, openssl-libs, openssl-perl, openssl-static
- Affected versions
- Not specified
- Fixed versions
- 1:1.1.1g-15.el8_4.tuxcare.els21
- CVEs
- CVE-2026-34180, CVE-2026-42766, CVE-2026-42768, CVE-2026-7383, CVE-2026-9076
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:48 UTC · Revision 1
Source evidence
- CVE-2026-34180: fix heap buffer over-read in ASN.1 content parsing caused by truncating a long content length to int - CVE-2026-7383: fix heap buffer overflow in ASN1_mbstring_ncopy() caused by signed integer overflow when computing the output length - CVE-2026-42766: fix NULL pointer dereference when keyDerivationAlgorithm is absent in CMS PasswordRecipientInfo - CVE-2026-9076: fix out-of-bounds read in kek_unwrap_key() check-byte validation for KEK ciphers with a block size below 4 octets - CVE-2026-42768: enforce implicit rejection for CMS and PKCS#7 RSA PKCS#1 v1.5 decryption
osv:CLSA-2026-1785489462
openssl
Fixed versions: 1:1.1.1g-15.el8_4.tuxcare.els21
openssl-devel
Fixed versions: 1:1.1.1g-15.el8_4.tuxcare.els21
openssl-libs
Fixed versions: 1:1.1.1g-15.el8_4.tuxcare.els21
openssl-perl
Fixed versions: 1:1.1.1g-15.el8_4.tuxcare.els21
openssl-static
Fixed versions: 1:1.1.1g-15.el8_4.tuxcare.els21
Complete source record
{
"id": "29f2d339cb10ddde85a2991cf78ef32bb8ce72c7354678736e514182fe57b8fc",
"url": "https://osv.dev/vulnerability/CLSA-2026-1785489462",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "openssl: Fix of 5 CVEs",
"summary": "- CVE-2026-34180: fix heap buffer over-read in ASN.1 content parsing caused by truncating a long content length to int - CVE-2026-7383: fix heap buffer overflow in ASN1_mbstring_ncopy() caused by signed integer overflow when computing the output length - CVE-2026-42766: fix NULL pointer dereference when keyDerivationAlgorithm is absent in CMS PasswordRecipientInfo - CVE-2026-9076: fix out-of-bounds read in kek_unwrap_key() check-byte validation for KEK ciphers with a block size below 4 octets - CVE-2026-42768: enforce implicit rejection for CMS and PKCS#7 RSA PKCS#1 v1.5 decryption",
"evidence": "osv:CLSA-2026-1785489462",
"products": [
{
"name": {
"value": "openssl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.1.1g-15.el8_4.tuxcare.els21",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssl-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.1.1g-15.el8_4.tuxcare.els21",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssl-libs",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.1.1g-15.el8_4.tuxcare.els21",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssl-perl",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.1.1g-15.el8_4.tuxcare.els21",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssl-static",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.1.1g-15.el8_4.tuxcare.els21",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1785489462",
"aliases": [
"CLSA-2026-1785489462"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.1.1g-15.el8_4.tuxcare.els21"
}
]
}
],
"package": {
"name": "openssl",
"purl": "pkg:rpm/tuxcare/openssl?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1785489462.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.1.1g-15.el8_4.tuxcare.els21"
}
]
}
],
"package": {
"name": "openssl-devel",
"purl": "pkg:rpm/tuxcare/openssl-devel?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1785489462.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.1.1g-15.el8_4.tuxcare.els21"
}
]
}
],
"package": {
"name": "openssl-libs",
"purl": "pkg:rpm/tuxcare/openssl-libs?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1785489462.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.1.1g-15.el8_4.tuxcare.els21"
}
]
}
],
"package": {
"name": "openssl-perl",
"purl": "pkg:rpm/tuxcare/openssl-perl?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1785489462.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.1.1g-15.el8_4.tuxcare.els21"
}
]
}
],
"package": {
"name": "openssl-static",
"purl": "pkg:rpm/tuxcare/openssl-static?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1785489462.json"
}
}
],
"modified": "2026-10-26T09:43:22.899789101Z",
"provider": "osv",
"upstream": [
"CVE-2026-34180",
"CVE-2026-42766",
"CVE-2026-42768",
"CVE-2026-7383",
"CVE-2026-9076"
],
"references": [
"https://errata.tuxcare.com/els_os/centos8.4els/CLSA-2026-1785489462.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34180",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42766",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42768",
"https://nvd.nist.gov/vuln/detail/CVE-2026-7383",
"https://nvd.nist.gov/vuln/detail/CVE-2026-9076"
]
},
"related_cves": [
{
"value": "CVE-2026-34180",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42766",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42768",
"evidence": "/upstream"
},
{
"value": "CVE-2026-7383",
"evidence": "/upstream"
},
{
"value": "CVE-2026-9076",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449876,
"published_at": "2026-07-31T16:11:46+00:00"
}