CVE-2026-43403
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
nsfs: tighten permission checks for ns iteration ioctls
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.
https://git.kernel.org/stable/c/0ad650e60150eda789deca5e78a6a09d26bf8fc9
https://git.kernel.org/stable/c/2f3dea284c761c890d676f77d5e55c0c496b4ef4
https://git.kernel.org/stable/c/3376b345df155ca36d8611857b41ff7d5183fc38
https://git.kernel.org/stable/c/e6b899f08066e744f89df16ceb782e06868bd148