CVE-2026-43403
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
08/05/2026
Last modified:
12/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
nsfs: tighten permission checks for ns iteration ioctls<br />
<br />
Even privileged services should not necessarily be able to see other<br />
privileged service&#39;s namespaces so they can&#39;t leak information to each<br />
other. Use may_see_all_namespaces() helper that centralizes this policy<br />
until the nstree adapts.
Impact
Base Score 3.x
8.80
Severity 3.x
HIGH