CVE-2026-97029: Improper Isolation or Compartmentalization in Red Hat Red Hat Enterprise Linux 10
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.
CVE-2026-97029: Improper Isolation or Compartmentalization in Red Hat Red Hat Enterprise Linux 10
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.
CVSS v3.1
Score 5.7medium
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 7
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-09-23T21:15:11.736Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-97029","vendor":"Red Hat"}]
Threat ID: 6abb3893f7a7c54106c0aaaa
Added to database: 09/29/2026, 04:03:31 UTC
Last updated: 09/29/2026, 04:03:31 UTC
Views: 1
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