Upstream information
Description
In Flatpak before 1.18.1, the revokefs writer, used by the flatpak-system-helper to receive repository data from unprivileged callers, validated file paths by rejecting literal .. components but did not prevent symlink traversal. A malicious local user in an active local session could obtain two revokefs sessions via the system helper, create a symlink in one session pointing into the other session's directory, and retain a file descriptor through that symlink. This allowed the attacker to modify files belonging to a different revokefs session after they had been validated and imported by the system helper. In particular, an attacker could use this to tamper with ostree commit objects in the system repository after they passed signature verification, enabling root-controlled file writes to attacker-chosen paths and local root privilege escalation.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (MITRE) | SUSE |
|---|---|---|
| Base Score | 7.4 | 7 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local | Local |
| Attack Complexity | High | High |
| Privileges Required | None | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 7.3 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Local |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | Low |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | High |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | High |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP7 | flatpak | Affected |
| SUSE Linux Enterprise Server 16.0 | flatpak | Affected |
| SUSE Linux Enterprise Server 16.1 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | flatpak | Affected |
| openSUSE Leap 16.0 | flatpak | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP6 | flatpak | Affected |
| SUSE Linux Enterprise Server 12 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP6 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | flatpak | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | flatpak | Affected |
| SUSE Enterprise Storage 6 | flatpak | Affected |
| SUSE Enterprise Storage 7 | flatpak | Affected |
| SUSE Enterprise Storage 7.1 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | flatpak | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | flatpak | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP1 | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP3 | flatpak | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | flatpak | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP1 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP3 | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | flatpak | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | flatpak | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | flatpak | Affected |
| SUSE Manager Proxy 4.0 | flatpak | Affected |
| SUSE Manager Proxy 4.1 | flatpak | Affected |
| SUSE Manager Proxy 4.2 | flatpak | Affected |
| SUSE Manager Proxy 4.3 | flatpak | Affected |
| SUSE Manager Retail Branch Server 4.0 | flatpak | Affected |
| SUSE Manager Retail Branch Server 4.1 | flatpak | Affected |
| SUSE Manager Retail Branch Server 4.2 | flatpak | Affected |
| SUSE Manager Retail Branch Server 4.3 | flatpak | Affected |
| SUSE Manager Server 4.0 | flatpak | Affected |
| SUSE Manager Server 4.1 | flatpak | Affected |
| SUSE Manager Server 4.2 | flatpak | Affected |
| SUSE Manager Server 4.3 | flatpak | Affected |
| openSUSE Leap 15.3 | flatpak | Affected |
| openSUSE Leap 15.4 | flatpak | Affected |
| openSUSE Leap 15.5 | flatpak | Affected |
| openSUSE Leap 15.6 | flatpak | Affected |
SUSE Timeline for this CVE
CVE page created: Wed Sep 23 21:57:06 2026CVE page last modified: Thu Sep 24 16:50:43 2026