Directory Traversal Affecting linuxcnc package, versions <1:2.9.9-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LINUXCNC-17724901
- published30 Jun 2026
- disclosed30 Jun 2026
Introduced: 30 Jun 2026
CVE-2026-58302 (opens in a new tab)How to fix?
Upgrade Debian:unstable linuxcnc to version 1:2.9.9-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linuxcnc package and not the linuxcnc package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
rtapi_app in linuxcnc-uspace in LinuxCNC before 2.9.9 allows privilege escalation. It is installed SUID root and loads shared library modules via dlopen() by using a user-supplied module name. Insufficient validation of the module name allows path traversal, enabling an unprivileged local user to load an arbitrary shared library. Because the process retains elevated privileges during module loading, this results in local privilege escalation to root.
References
- https://security-tracker.debian.org/tracker/CVE-2026-58302
- https://bugs.debian.org/1140943
- https://github.com/LinuxCNC/linuxcnc/commit/00d534c87464a3ed446656998aa02b8abc74b391
- https://github.com/LinuxCNC/linuxcnc/commit/ea7cd579d39b586952a42e3da9a26d3e36e7a272
- https://github.com/LinuxCNC/linuxcnc/compare/v2.9.8...v2.9.9