Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Enterprise Linux 10 | unaffected 0:1.16.0-9.el10_2.4 before * |
| Red Hat / Red Hat Enterprise Linux 8 | unaffected 0:1.12.9-7.el8_10 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:1.12.9-4.el9_8.4 before * |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
CWE
CWE-197
References
- https://access.redhat.com/errata/RHSA-2026:80497
- https://access.redhat.com/errata/RHSA-2026:80498
- https://access.redhat.com/errata/RHSA-2026:80687
- https://access.redhat.com/security/cve/CVE-2026-96280
- https://bugzilla.redhat.com/show_bug.cgi?id=2539419
- https://github.com/flatpak/flatpak/security/advisories/GHSA-jr92-2v97-wgvc
ADP enrichment
No English description supplied.
No references supplied.