{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"flatpak","product":"Red Hat Enterprise Linux 10","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"flatpak","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"flatpak","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"flatpak","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-97029","cwes":["CWE-653"],"description":"Flatpak's process ID namespace separation does not prevent a sandboxed app's kill(0, signal) or killpg(0, signal) calls from reaching processes outside the sandbox that share the same process group. A malicious or compromised Flatpak app can use this to cause denial of service by terminating processes outside its sandbox, such as the desktop shell.","epss":{"date":"2026-11-05","percentile":0.1579,"score":0.00245},"exploits":[],"kev":null,"metrics":[{"score":5.7,"severity":"medium","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793931484840,"publishedAt":1790653396941,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-97029"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542698"},{"source":"CNA: redhat","tags":[],"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-f3p8-vr7v-gxf2"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"Run Flatpak apps in a new session (setsid flatpak run ... or setsid() in the parent) or a new process group (setpgid (0, 0) in the parent), or avoid running untrusted Flatpak apps."}],"revision":"a2477cf76b27e0596da5490825cd5c5a6122e4d66f8aea7e34af9b29061270af","sources":[{"modifiedAt":1793931484840,"name":"CNA: redhat","retrievedAt":1793934554961,"url":"https://www.cve.org/CVERecord?id=CVE-2026-97029"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793934557034,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97029"}],"ssvc":{"assessedAt":1790697132039,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Flatpak: flatpak: sandboxed app can signal unsandboxed processes in the same process group","updatedAt":1793934557034}