Vulnerability in Red Hat Enterprise Linux 10
CVE-2026-96280
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-96280?
- CVE-2026-96280 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under CWE-197. CVSS score: 7.5/10. Published 2026-09-27.
- How severe is CVE-2026-96280?
- High severity. CVSS v3 base score is 7.5 out of 10.