UnratedFix available
gnutls: Fix of CVE-2026-42009
Type: advisorySources: OSV
- CVE-2026-42009: fix DTLS handshake_compare qsort comparator contract violation (undefined behaviour) - CVE-2026-33846: add DTLS reassembly fragment length/bounds checks (heap overwrite) - CVE-2026-42012: URI subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-42013: oversized subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-5260: guard PKCS#11 RSA decryption against short-ciphertext heap overread
- Products
- gnutls, gnutls-c++, gnutls-dane, gnutls-devel, gnutls-utils
- Affected versions
- Not specified
- Fixed versions
- 3.3.29-9.el7_6.tuxcare.els5
- CVEs
- CVE-2026-33846, CVE-2026-42009, CVE-2026-42012, CVE-2026-42013, CVE-2026-5260
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:56 UTC · Revision 1
Source evidence
- CVE-2026-42009: fix DTLS handshake_compare qsort comparator contract violation (undefined behaviour) - CVE-2026-33846: add DTLS reassembly fragment length/bounds checks (heap overwrite) - CVE-2026-42012: URI subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-42013: oversized subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-5260: guard PKCS#11 RSA decryption against short-ciphertext heap overread
osv:CLSA-2026-1783520053
gnutls
Fixed versions: 3.3.29-9.el7_6.tuxcare.els5
gnutls-c++
Fixed versions: 3.3.29-9.el7_6.tuxcare.els5
gnutls-dane
Fixed versions: 3.3.29-9.el7_6.tuxcare.els5
gnutls-devel
Fixed versions: 3.3.29-9.el7_6.tuxcare.els5
gnutls-utils
Fixed versions: 3.3.29-9.el7_6.tuxcare.els5
Complete source record
{
"id": "f0673c18700d2ea895d57d2bf7d61116fcd3f21d7e6bc3d4732829c799f216a9",
"url": "https://osv.dev/vulnerability/CLSA-2026-1783520053",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "gnutls: Fix of CVE-2026-42009",
"summary": "- CVE-2026-42009: fix DTLS handshake_compare qsort comparator contract violation (undefined behaviour) - CVE-2026-33846: add DTLS reassembly fragment length/bounds checks (heap overwrite) - CVE-2026-42012: URI subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-42013: oversized subjectAltName now precludes Common Name fallback in hostname verification - CVE-2026-5260: guard PKCS#11 RSA decryption against short-ciphertext heap overread",
"evidence": "osv:CLSA-2026-1783520053",
"products": [
{
"name": {
"value": "gnutls",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.29-9.el7_6.tuxcare.els5",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "gnutls-c++",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.29-9.el7_6.tuxcare.els5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "gnutls-dane",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.29-9.el7_6.tuxcare.els5",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "gnutls-devel",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.29-9.el7_6.tuxcare.els5",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "gnutls-utils",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.29-9.el7_6.tuxcare.els5",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1783520053",
"aliases": [
"CLSA-2026-1783520053"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.29-9.el7_6.tuxcare.els5"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:rpm/tuxcare/gnutls?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1783520053.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.29-9.el7_6.tuxcare.els5"
}
]
}
],
"package": {
"name": "gnutls-c++",
"purl": "pkg:rpm/tuxcare/gnutls-c++?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1783520053.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.29-9.el7_6.tuxcare.els5"
}
]
}
],
"package": {
"name": "gnutls-dane",
"purl": "pkg:rpm/tuxcare/gnutls-dane?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1783520053.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.29-9.el7_6.tuxcare.els5"
}
]
}
],
"package": {
"name": "gnutls-devel",
"purl": "pkg:rpm/tuxcare/gnutls-devel?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1783520053.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.29-9.el7_6.tuxcare.els5"
}
]
}
],
"package": {
"name": "gnutls-utils",
"purl": "pkg:rpm/tuxcare/gnutls-utils?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1783520053.json"
}
}
],
"modified": "2026-10-26T09:43:47.771104572Z",
"provider": "osv",
"upstream": [
"CVE-2026-33846",
"CVE-2026-42009",
"CVE-2026-42012",
"CVE-2026-42013",
"CVE-2026-5260"
],
"references": [
"https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1783520053.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42009"
]
},
"related_cves": [
{
"value": "CVE-2026-33846",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42009",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42012",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42013",
"evidence": "/upstream"
},
{
"value": "CVE-2026-5260",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450150,
"published_at": "2026-08-11T20:01:28+00:00"
}