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CVE-2026-96280 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-96280	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2539419	[email protected]
https://github.com/flatpak/flatpak/security/advisories/GHSA-jr92-2v97-wgvc	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-197	Numeric Truncation Error	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes