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.
2025-07-09T11:15:26.847
2025-07-10T13:17:30.017
Awaiting Analysis
416baaa9-dc9f-4396-8d5f-8c081fb06d67
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