Upstream information
Description
filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, SoftFileLock can trust a forged process identifier in a marker that an attacker can modify but cannot remove, allowing an authorized contender such as another process of the holder's account or root to act as a confused deputy, remove the live marker, and admit another holder. This issue is fixed in version 4.2.1.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 4.7 | 5.3 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L |
| Attack Vector | Local | Local |
| Attack Complexity | High | High |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | High | High |
| Availability Impact | None | Low |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 5.8 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/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 | None |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | Low |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 16.0 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 16.1 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 16.2 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for NVIDIA 16.1 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.2 | python-filelock | Not affected |
| openSUSE Leap 16.0 | python-filelock | Not affected |
| openSUSE Leap 16.1 | python-filelock | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-filelock | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP6 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python-filelock | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-filelock | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-filelock | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-filelock | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | python-filelock | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | python-filelock | Not affected |
| SUSE Manager Proxy 4.3 | python-filelock | Not affected |
| SUSE Manager Retail Branch Server 4.3 | python-filelock | Not affected |
| SUSE Manager Server 4.3 | python-filelock | Not affected |
| openSUSE Leap 15.3 | python-filelock | Not affected |
| openSUSE Leap 15.4 | python-filelock | Not affected |
| openSUSE Leap 15.5 | python-filelock | Not affected |
| openSUSE Leap 15.6 | python-filelock | Not affected |
SUSE Timeline for this CVE
CVE page created: Wed Oct 21 17:15:55 2026CVE page last modified: Wed Oct 21 19:58:24 2026