{"id":"CVE-2026-97029","published":"2026-09-29T04:18:02.573","lastModified":"2026-09-29T21:29:07.663","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.","cvssScore":5.7,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-653"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-97029","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542698","tags":[]},{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-f3p8-vr7v-gxf2","tags":[]}],"exploitRefs":[{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-f3p8-vr7v-gxf2","tags":[]}],"hasPoc":true,"ai":null}