UnratedFix available
Fix CVE(s): CVE-2026-78002
Type: advisorySources: OSV
* SECURITY UPDATE: Heap buffer overflow in RainerScript replace() - debian/patches/CVE-2026-78002.patch: rewind the sizing pass by the full failed partial-match length in doFuncReplace() in grammar/rainerscript.c, so the allocated result matches what the copy pass writes - debian/patches/CVE-2026-78002-tests.patch: add regression test tests/rscript_replace-overlap.sh covering replace() with an overlapping partial match (the overflow trigger) - CVE-2026-78002
- Products
- rsyslog, rsyslog-czmq, rsyslog-elasticsearch, rsyslog-gnutls, rsyslog-gssapi, rsyslog-hiredis, rsyslog-kafka, rsyslog-mongodb, rsyslog-mysql, rsyslog-openssl, rsyslog-pgsql, rsyslog-relp
- Affected versions
- Not specified
- Fixed versions
- 8.2001.0-1ubuntu1.3+tuxcare.els2
- CVEs
- CVE-2026-78002
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:59 UTC · Revision 1
Source evidence
* SECURITY UPDATE: Heap buffer overflow in RainerScript replace() - debian/patches/CVE-2026-78002.patch: rewind the sizing pass by the full failed partial-match length in doFuncReplace() in grammar/rainerscript.c, so the allocated result matches what the copy pass writes - debian/patches/CVE-2026-78002-tests.patch: add regression test tests/rscript_replace-overlap.sh covering replace() with an overlapping partial match (the overflow trigger) - CVE-2026-78002
osv:CLSA-2026-1791371082
rsyslog
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-czmq
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-elasticsearch
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-gnutls
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-gssapi
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-hiredis
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-kafka
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-mongodb
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-mysql
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-openssl
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-pgsql
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
rsyslog-relp
Fixed versions: 8.2001.0-1ubuntu1.3+tuxcare.els2
Complete source record
{
"id": "5cb05ac7568e550fe2b1694c47804bd9f12c7649a7ebd64159b06bcb908a98a4",
"url": "https://osv.dev/vulnerability/CLSA-2026-1791371082",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-78002",
"summary": "* SECURITY UPDATE: Heap buffer overflow in RainerScript replace() - debian/patches/CVE-2026-78002.patch: rewind the sizing pass by the full failed partial-match length in doFuncReplace() in grammar/rainerscript.c, so the allocated result matches what the copy pass writes - debian/patches/CVE-2026-78002-tests.patch: add regression test tests/rscript_replace-overlap.sh covering replace() with an overlapping partial match (the overflow trigger) - CVE-2026-78002",
"evidence": "osv:CLSA-2026-1791371082",
"products": [
{
"name": {
"value": "rsyslog",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-czmq",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-elasticsearch",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-gnutls",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-gssapi",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-hiredis",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-kafka",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-mongodb",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-mysql",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-openssl",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-pgsql",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rsyslog-relp",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2001.0-1ubuntu1.3+tuxcare.els2",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1791371082",
"aliases": [
"CLSA-2026-1791371082"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog",
"purl": "pkg:deb/tuxcare/rsyslog?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-czmq",
"purl": "pkg:deb/tuxcare/rsyslog-czmq?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-elasticsearch",
"purl": "pkg:deb/tuxcare/rsyslog-elasticsearch?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-gnutls",
"purl": "pkg:deb/tuxcare/rsyslog-gnutls?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-gssapi",
"purl": "pkg:deb/tuxcare/rsyslog-gssapi?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-hiredis",
"purl": "pkg:deb/tuxcare/rsyslog-hiredis?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-kafka",
"purl": "pkg:deb/tuxcare/rsyslog-kafka?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-mongodb",
"purl": "pkg:deb/tuxcare/rsyslog-mongodb?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-mysql",
"purl": "pkg:deb/tuxcare/rsyslog-mysql?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-openssl",
"purl": "pkg:deb/tuxcare/rsyslog-openssl?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-pgsql",
"purl": "pkg:deb/tuxcare/rsyslog-pgsql?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2001.0-1ubuntu1.3+tuxcare.els2"
}
]
}
],
"package": {
"name": "rsyslog-relp",
"purl": "pkg:deb/tuxcare/rsyslog-relp?distro=ubuntu-20.04",
"ecosystem": "TuxCare:Ubuntu:20.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791371082.json"
}
}
],
"modified": "2026-10-26T09:31:40.156373189Z",
"provider": "osv",
"upstream": [
"CVE-2026-78002"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu20.04els/CLSA-2026-1791371082.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-78002"
]
},
"related_cves": [
{
"value": "CVE-2026-78002",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448030,
"published_at": "2026-10-07T11:04:56+00:00"
}