{"id":"CVE-2026-96280","aliases":[],"title":"Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems","titleSource":"redhat","descriptionSource":"redhat","products":[{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[{"version":"0:1.16.0-9.el10_2.4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[{"version":"0:1.12.9-7.el8_10","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[{"version":"0:1.12.9-4.el9_8.4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","platforms":[],"versions":[{"version":"0:1.12.9-3.el9_4.5","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.6 Extended Update Support","platforms":[],"versions":[{"version":"0:1.12.9-4.el9_6.5","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"}],"remediation":[{"text":"Only install applications from trusted OCI registries. Flatpak remotes using the default OSTree transport are not affected.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"}],"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.","severity":"high","score":7.5,"published":"2026-09-27T20:19:12.890Z","modified":"2026-10-27T04:08:51.767Z","withdrawn":false,"knownExploited":false,"affected":[],"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/errata/RHSA-2026:89733","https://access.redhat.com/errata/RHSA-2026:90364","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"],"sources":[{"name":"CVE","id":"CVE-2026-96280","modified":"2026-10-27T04:08:51.767Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-96280"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T04:45:35.847Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}