Red HatCVE-2026-96280
Red Hat Enterprise Linux: code execution
High7.5CVE-2026-96280 · Published Sep 27, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 7 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-197
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 27 | Red Hat Enterprise Linux: link following | Low2.5 | No fix yet |
| Sep 27 | Red Hat Enterprise Linux: link following | Low3.1 | No fix yet |
| Sep 27 | Red Hat Enterprise Linux: missing authorization | Low3.3 | No fix yet |
| Sep 27 | Red Hat Enterprise Linux: improper access control | Medium6.2 | No fix yet |
| Sep 27 | Red Hat Enterprise Linux: link following | Medium6.5 | No fix yet |
| Sep 25 | Red Hat QEMU: use after free | High8.8 | No fix yet |