Fix CVE(s): CVE-2026-13221, CVE-2026-57432
* SECURITY UPDATE: regex trie 16-bit next-offset overflow (GH#23388) - debian/patches/CVE-2026-13221.patch: do not build a trie when the branch-to-tail delta would overflow the 16-bit next-offset field in S_study_chunk() in regcomp.c - CVE-2026-13221 * SECURITY UPDATE: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - debian/patches/CVE-2026-57432.patch: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - CVE-2026-57432
- Products
- libperl-dev, libperl5.26, perl, perl-base, perl-debug, perl-doc, perl-modules-5.26
- Affected versions
- Not specified
- Fixed versions
- 5.26.1-6ubuntu0.7+tuxcare.els3
- CVEs
- CVE-2026-13221, CVE-2026-57432
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:38 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2026-13221, CVE-2026-57432
core-osv · Original sourcePublished 17 Jul 2026, 15:52 UTC
* SECURITY UPDATE: regex trie 16-bit next-offset overflow (GH#23388) - debian/patches/CVE-2026-13221.patch: do not build a trie when the branch-to-tail delta would overflow the 16-bit next-offset field in S_study_chunk() in regcomp.c - CVE-2026-13221 * SECURITY UPDATE: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - debian/patches/CVE-2026-57432.patch: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - CVE-2026-57432
osv:CLSA-2026-1784303555
libperl-dev
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
libperl5.26
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
perl
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
perl-base
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
perl-debug
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
perl-doc
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
perl-modules-5.26
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els3
Complete source record
{
"id": "e0c2d0c326d0199bd6c659b55042d3e94e2b4adfeeb79ec79b5352fa56ff75f5",
"url": "https://osv.dev/vulnerability/CLSA-2026-1784303555",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-13221, CVE-2026-57432",
"summary": "* SECURITY UPDATE: regex trie 16-bit next-offset overflow (GH#23388) - debian/patches/CVE-2026-13221.patch: do not build a trie when the branch-to-tail delta would overflow the 16-bit next-offset field in S_study_chunk() in regcomp.c - CVE-2026-13221 * SECURITY UPDATE: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - debian/patches/CVE-2026-57432.patch: integer overflow in pack/unpack structure sizing (S_measure_struct); a large repeat count wraps the signed size negative, leading to an out-of-bounds heap read - CVE-2026-57432",
"evidence": "osv:CLSA-2026-1784303555",
"products": [
{
"name": {
"value": "libperl-dev",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libperl5.26",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl-base",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl-debug",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl-doc",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl-modules-5.26",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.26.1-6ubuntu0.7+tuxcare.els3",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1784303555",
"aliases": [
"CLSA-2026-1784303555"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.7+tuxcare.els3"
}
]
}
],
"package": {
"name": "libperl-dev",
"purl": "pkg:deb/tuxcare/libperl-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
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}
]
}
],
"package": {
"name": "libperl5.26",
"purl": "pkg:deb/tuxcare/libperl5.26?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "perl",
"purl": "pkg:deb/tuxcare/perl?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "perl-base",
"purl": "pkg:deb/tuxcare/perl-base?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.7+tuxcare.els3"
}
]
}
],
"package": {
"name": "perl-debug",
"purl": "pkg:deb/tuxcare/perl-debug?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.7+tuxcare.els3"
}
]
}
],
"package": {
"name": "perl-doc",
"purl": "pkg:deb/tuxcare/perl-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.7+tuxcare.els3"
}
]
}
],
"package": {
"name": "perl-modules-5.26",
"purl": "pkg:deb/tuxcare/perl-modules-5.26?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1784303555.json"
}
}
],
"modified": "2026-10-26T09:30:09.186092397Z",
"provider": "osv",
"upstream": [
"CVE-2026-13221",
"CVE-2026-57432"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1784303555.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-13221",
"https://nvd.nist.gov/vuln/detail/CVE-2026-57432"
]
},
"related_cves": [
{
"value": "CVE-2026-13221",
"evidence": "/upstream"
},
{
"value": "CVE-2026-57432",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 446865,
"published_at": "2026-07-17T15:52:59+00:00"
}