Medium
libmodulemd — security advisory
A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.
- Products
- libmodulemd
- Affected versions
- 2.14.0-3, 2.15.0-1, 2.15.2-1, 2.15.2-2, 2.15.2-3, 2.15.2-4, 2.15.3-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-92824
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:43 UTC · Revision 1
Source evidence
A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.
osv:DEBIAN-CVE-2026-92824
libmodulemd
Fixed versions: Not specified
libmodulemd
Fixed versions: Not specified
libmodulemd
Fixed versions: Not specified
Complete source record
{
"id": "0250701329c2908cab3b8b3c6eea5079d571c923f08d947bc725866e673c67f3",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-92824",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-92824",
"summary": "A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.",
"evidence": "osv:DEBIAN-CVE-2026-92824",
"products": [
{
"name": {
"value": "libmodulemd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.14.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.2-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.2-4",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.3-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "libmodulemd",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.15.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.2-3",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.2-4",
"evidence": "/affected/1/versions"
},
{
"value": "2.15.3-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "libmodulemd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.15.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.15.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.15.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.15.2-3",
"evidence": "/affected/2/versions"
},
{
"value": "2.15.2-4",
"evidence": "/affected/2/versions"
},
{
"value": "2.15.3-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-92824",
"aliases": [
"DEBIAN-CVE-2026-92824"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libmodulemd",
"purl": "pkg:deb/debian/libmodulemd?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.14.0-3",
"2.15.0-1",
"2.15.2-1",
"2.15.2-2",
"2.15.2-3",
"2.15.2-4",
"2.15.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-92824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libmodulemd",
"purl": "pkg:deb/debian/libmodulemd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.15.0-1",
"2.15.2-1",
"2.15.2-2",
"2.15.2-3",
"2.15.2-4",
"2.15.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-92824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libmodulemd",
"purl": "pkg:deb/debian/libmodulemd?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.15.0-1",
"2.15.2-1",
"2.15.2-2",
"2.15.2-3",
"2.15.2-4",
"2.15.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-92824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-31T09:47:26.795315651Z",
"provider": "osv",
"upstream": [
"CVE-2026-92824"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-92824"
]
},
"related_cves": [
{
"value": "CVE-2026-92824",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461042,
"published_at": "2026-10-21T04:18:12.263+00:00"
}