Description
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.
Product status
c4a16820d90199409c9bf01c4f794e1e9e8d8fd8 (git) before 142db4e76110dd80239f4e79810f85ea1735ad60
c4a16820d90199409c9bf01c4f794e1e9e8d8fd8 (git) before 0748e553df0225754c316a92af3a77fdc057b358
6.15
Any version before 6.15
6.15.5 (semver)
6.16 (original_commit_for_fix)
References
git.kernel.org/...c/142db4e76110dd80239f4e79810f85ea1735ad60
git.kernel.org/...c/0748e553df0225754c316a92af3a77fdc057b358