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Test your applicationsThere is no fixed version for RHEL:6 kernel-debug-devel.
Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by RHEL.
See How to fix? for RHEL:6 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
userns and mnt_idmap leak in open_tree_attr(2)
Once want_mount_setattr() has returned a positive, it does require finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr() does not change that.
As the result, we can end up leaking userns and possibly mnt_idmap as well.