Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nstree: tighten permission checks for listing Even privileged services should not necessarily be able to see other privileged service's namespaces so they can't leak information to each other. Use may_see_all_namespaces() helper that centralizes this policy until the nstree adapts.
References
- https://git.kernel.org/stable/c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4
- https://git.kernel.org/stable/c/8d76afe84fa2babf604b3c173730d4d2b067e361
FAQ
What is CVE-2026-43390?
CVE-2026-43390 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: nstree: tighten permission checks for listing Even privileged services should not necessarily be able to see other privileged serv...
How severe is CVE-2026-43390?
CVSS scoring is not yet available for CVE-2026-43390. Check NVD for updates.
Is there a patch for CVE-2026-43390?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.