CVE-2026-97029

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.

CVSS v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-97029
https://bugzilla.redhat.com/show_bug.cgi?id=2542698
https://github.com/flatpak/flatpak/security/advisories/GHSA-f3p8-vr7v-gxf2

Configurations

No configuration.

History

29 Sep 2026, 04:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 04:18

Updated : 2026-09-29 21:29

NVD link : CVE-2026-97029

Mitre link : CVE-2026-97029

CVE.ORG link : CVE-2026-97029

JSON object : View

Products Affected

No product.

CWE

CWE-653

Improper Isolation or Compartmentalization

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