UnratedFix available
flatpak: Fix of CVE-2026-96280
Type: advisorySources: OSV
- CVE-2026-96280: the OCI delta parser read sizes as guint64 and passed them to gsize APIs, and delta_read_data() allocated size + 1 bytes, which wraps to zero for size G_MAXSIZE; sizes are now gsize and clamped to G_MAXSIZE, delta_read_data() rejects size G_MAXSIZE and delta paths longer than PATH_MAX are rejected
- Products
- flatpak, flatpak-devel, flatpak-libs, flatpak-selinux, flatpak-session-helper, flatpak-tests
- Affected versions
- Not specified
- Fixed versions
- 1.12.9-4.el9_6.tuxcare.els6
- CVEs
- CVE-2026-96280
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:55 UTC · Revision 1
Source evidence
- CVE-2026-96280: the OCI delta parser read sizes as guint64 and passed them to gsize APIs, and delta_read_data() allocated size + 1 bytes, which wraps to zero for size G_MAXSIZE; sizes are now gsize and clamped to G_MAXSIZE, delta_read_data() rejects size G_MAXSIZE and delta paths longer than PATH_MAX are rejected
osv:CLSA-2026-1792153368
flatpak
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
flatpak-devel
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
flatpak-libs
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
flatpak-selinux
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
flatpak-session-helper
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
flatpak-tests
Fixed versions: 1.12.9-4.el9_6.tuxcare.els6
Complete source record
{
"id": "7ee59f480c4ef253db25f6ca2c49d9581a14cb7ef5c429ee9cd0a08c0355e1ef",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792153368",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "flatpak: Fix of CVE-2026-96280",
"summary": "- CVE-2026-96280: the OCI delta parser read sizes as guint64 and passed them to gsize APIs, and delta_read_data() allocated size + 1 bytes, which wraps to zero for size G_MAXSIZE; sizes are now gsize and clamped to G_MAXSIZE, delta_read_data() rejects size G_MAXSIZE and delta paths longer than PATH_MAX are rejected",
"evidence": "osv:CLSA-2026-1792153368",
"products": [
{
"name": {
"value": "flatpak",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "flatpak-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "flatpak-libs",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "flatpak-selinux",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "flatpak-session-helper",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "flatpak-tests",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.9-4.el9_6.tuxcare.els6",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792153368",
"aliases": [
"CLSA-2026-1792153368"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak",
"purl": "pkg:rpm/tuxcare/flatpak?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak-devel",
"purl": "pkg:rpm/tuxcare/flatpak-devel?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak-libs",
"purl": "pkg:rpm/tuxcare/flatpak-libs?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak-selinux",
"purl": "pkg:rpm/tuxcare/flatpak-selinux?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak-session-helper",
"purl": "pkg:rpm/tuxcare/flatpak-session-helper?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.9-4.el9_6.tuxcare.els6"
}
]
}
],
"package": {
"name": "flatpak-tests",
"purl": "pkg:rpm/tuxcare/flatpak-tests?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1792153368.json"
}
}
],
"modified": "2026-10-26T09:31:36.592523677Z",
"provider": "osv",
"upstream": [
"CVE-2026-96280"
],
"references": [
"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1792153368.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-96280"
]
},
"related_cves": [
{
"value": "CVE-2026-96280",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 447823,
"published_at": "2026-10-16T12:22:57+00:00"
}