The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an OCI registry can craft a delta stream that triggers this during flatpak install/update, potentially achieving code execution on 32-bit systems.
History

Mon, 12 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/a:redhat:enterprise_linux:8::crb
References

Mon, 12 Oct 2026 08:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/a:redhat:enterprise_linux:9::crb
References

Mon, 12 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 12 Oct 2026 03:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.2
References

Mon, 28 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Flatpak
Flatpak flatpak
Vendors & Products Flatpak
Flatpak flatpak

Sun, 27 Sep 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Sun, 27 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an OCI registry can craft a delta stream that triggers this during flatpak install/update, potentially achieving code execution on 32-bit systems.
Title Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-197
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-09-27T20:19:12.890Z

Updated: 2026-10-12T16:25:45.209Z

Reserved: 2026-09-22T20:43:35.900Z

Link: CVE-2026-96280

cve-icon Vulnrichment

Updated: 2026-09-29T15:50:53.276Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-27T21:17:04.200

Modified: 2026-10-12T17:17:39.117

Link: CVE-2026-96280

cve-icon Redhat

No data.