Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-96280
Red Hat Red Hat Enterprise Linux 10 — Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N R U H H H 7.5 .0066 50.8 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified 0:1.16.0-9.el10_2.4
Red Hat Enterprise Linux 8 unspecified 0:1.12.9-7.el8_10
Red Hat Enterprise Linux 9 unspecified 0:1.12.9-4.el9_8.4
Red Hat Enterprise Linux 7 unspecified —
TIMELINE
Sep 22 Reserved by redhat
Sep 27 Published (CNA: redhat)
Oct 11 PATCH SHIPPED — CVE-2026-96280 (Red Hat Enterprise Linux 10). Fixed in Red Hat Enterprise Linux 10 0:1.16.0-9.el10_2.4.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 22, 2026 | Reserved | Reserved by redhat |
| September 27, 2026 | Published | Published (CNA: redhat) |
| October 11, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-96280 (Red Hat Enterprise Linux 10). Fixed in Red Hat Enterprise Linux 10 0:1.16.0-9.el10_2.4. |
Affected
Affected products and packages — 4 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | 0:1.16.0-9.el10_2.4 |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | 0:1.12.9-7.el8_10 |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | 0:1.12.9-4.el9_8.4 |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-96280 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
