UnratedFix available
krb5: Fix of 2 CVEs
Type: advisorySources: OSV
- CVE-2026-40355: NULL pointer dereference in parse_nego_message() - CVE-2026-40356: integer underflow and out-of-bounds read in parse_message()
- Products
- krb5-devel, krb5-libs, krb5-pkinit, krb5-server, krb5-server-ldap, krb5-workstation, libkadm5
- Affected versions
- Not specified
- Fixed versions
- 1.18.2-14.el8.tuxcare.els7
- CVEs
- CVE-2026-40355, CVE-2026-40356
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:17 UTC · Revision 1
Source evidence
- CVE-2026-40355: NULL pointer dereference in parse_nego_message() - CVE-2026-40356: integer underflow and out-of-bounds read in parse_message()
osv:CLSA-2026-1792593112
krb5-devel
Fixed versions: 1.18.2-14.el8.tuxcare.els7
krb5-libs
Fixed versions: 1.18.2-14.el8.tuxcare.els7
krb5-pkinit
Fixed versions: 1.18.2-14.el8.tuxcare.els7
krb5-server
Fixed versions: 1.18.2-14.el8.tuxcare.els7
krb5-server-ldap
Fixed versions: 1.18.2-14.el8.tuxcare.els7
krb5-workstation
Fixed versions: 1.18.2-14.el8.tuxcare.els7
libkadm5
Fixed versions: 1.18.2-14.el8.tuxcare.els7
Complete source record
{
"id": "9bb401bb3ddbd4903d161176c3534512dc21afa0e8283f0c29954881a930a2b4",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792593112",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "krb5: Fix of 2 CVEs",
"summary": "- CVE-2026-40355: NULL pointer dereference in parse_nego_message() - CVE-2026-40356: integer underflow and out-of-bounds read in parse_message()",
"evidence": "osv:CLSA-2026-1792593112",
"products": [
{
"name": {
"value": "krb5-devel",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5-libs",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5-pkinit",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5-server",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5-server-ldap",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5-workstation",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libkadm5",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-14.el8.tuxcare.els7",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792593112",
"aliases": [
"CLSA-2026-1792593112"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-devel",
"purl": "pkg:rpm/tuxcare/krb5-devel?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-libs",
"purl": "pkg:rpm/tuxcare/krb5-libs?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-pkinit",
"purl": "pkg:rpm/tuxcare/krb5-pkinit?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-server",
"purl": "pkg:rpm/tuxcare/krb5-server?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-server-ldap",
"purl": "pkg:rpm/tuxcare/krb5-server-ldap?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "krb5-workstation",
"purl": "pkg:rpm/tuxcare/krb5-workstation?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-14.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "libkadm5",
"purl": "pkg:rpm/tuxcare/libkadm5?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1792593112.json"
}
}
],
"modified": "2026-10-26T09:31:52.115635582Z",
"provider": "osv",
"upstream": [
"CVE-2026-40355",
"CVE-2026-40356"
],
"references": [
"https://errata.tuxcare.com/els_os/centos8.5els/CLSA-2026-1792593112.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-40355",
"https://nvd.nist.gov/vuln/detail/CVE-2026-40356"
]
},
"related_cves": [
{
"value": "CVE-2026-40355",
"evidence": "/upstream"
},
{
"value": "CVE-2026-40356",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448747,
"published_at": "2026-10-21T14:32:05+00:00"
}