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CVE-2026-97029 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.7 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-97029	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2542698	[email protected]
https://github.com/flatpak/flatpak/security/advisories/GHSA-f3p8-vr7v-gxf2	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-653	Improper Isolation or Compartmentalization	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 29, 2026	CVE Modified	CISA-ADP
Sep 29, 2026	New CVE Received	[email protected]