CVE-2026-97029
Flatpak: flatpak: sandboxed app can signal unsandboxed processes in the same process group
- State
- Published
- Severity
- 5.7 Medium
- Published
- Sep 29, 2026
- Updated
- Sep 29, 2026
- Reserved
- Sep 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.7 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-653 Improper Isolation or Compartmentalization
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
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