EUVD-2026-108784

In the Linux kernel, the following vulnerability has been resolved: namespace: check a submount for references right before unmounting it shrinksubmounts and markmountsforexpiry first collect all the mounts they are allowed to unmount and then unmount them. Whether a mount is busy is decided by...

CVE-2026-98989 namespace: check a recursive bind mount for mount namespace loops

In the Linux kernel, the following vulnerability has been resolved: namespace: check a recursive bind mount for mount namespace loops doloopback refuses to bind mount the file of a mount namespace that is as old as the caller's or older because a mount namespace that holds a mount of its own file...

EUVD-2026-108783

In the Linux kernel, the following vulnerability has been resolved: namespace: check a recursive bind mount for mount namespace loops doloopback refuses to bind mount the file of a mount namespace that is as old as the caller's or older because a mount namespace that holds a mount of its own file...

CVE-2026-98989 namespace: check a recursive bind mount for mount namespace loops

In the Linux kernel, the following vulnerability has been resolved: namespace: check a recursive bind mount for mount namespace loops doloopback refuses to bind mount the file of a mount namespace that is as old as the caller's or older because a mount namespace that holds a mount of its own file...

CVE-2026-98989

The Linux kernel contains a vulnerability where the do_loopback() function fails to properly check for recursive bind mount loops when using the MS_REC flag. Specifically, while it checks the starting dentry, it allows the copying of mount namespace files from other namespaces. This allows an att...

CVE-2026-98988 namespace: keep covered mounts covered in OPEN_TREE_NAMESPACE

In the Linux kernel, the following vulnerability has been resolved: namespace: keep covered mounts covered in OPENTREENAMESPACE opentreeOPENTREENAMESPACE creates a new mount namespace from a copy of the tree at the given path. The caller needs to be privileged over its current user namespace...

EUVD-2026-108782

In the Linux kernel, the following vulnerability has been resolved: namespace: keep covered mounts covered in OPENTREENAMESPACE opentreeOPENTREENAMESPACE creates a new mount namespace from a copy of the tree at the given path. The caller needs to be privileged over its current user namespace...

CVE-2026-98988 namespace: keep covered mounts covered in OPEN_TREE_NAMESPACE

In the Linux kernel, the following vulnerability has been resolved: namespace: keep covered mounts covered in OPENTREENAMESPACE opentreeOPENTREENAMESPACE creates a new mount namespace from a copy of the tree at the given path. The caller needs to be privileged over its current user namespace...

CVE-2026-98988

The Linux kernel contains a vulnerability in how open_tree(OPEN_TREE_NAMESPACE) handles mount namespaces. When an unprivileged user creates a new user namespace and calls open_tree, the copy of the mount tree incorrectly preserves covered mounts (e.g., mounts used to mask /proc or /sys). This all...

EUVD-2026-108781

In the Linux kernel, the following vulnerability has been resolved: namespace: look at the topmost mount for a mount namespace file attachrecursivemnt preallocates a mountpoint for the root of the topmost mount of the source so that a mount that already sits at the destination can be put on top o...

CVE-2026-98987 namespace: look at the topmost mount for a mount namespace file

In the Linux kernel, the following vulnerability has been resolved: namespace: look at the topmost mount for a mount namespace file attachrecursivemnt preallocates a mountpoint for the root of the topmost mount of the source so that a mount that already sits at the destination can be put on top o...

CVE-2026-98987

The Linux kernel contains a vulnerability where the attach_recursive_mnt() function fails to inspect the topmost mount of a source chain for a mount namespace file. This oversight causes mnt_change_mountpoint() to incorrectly attach existing mounts below the root of the mount namespace file as a ...

CVE-2026-98987 namespace: look at the topmost mount for a mount namespace file

In the Linux kernel, the following vulnerability has been resolved: namespace: look at the topmost mount for a mount namespace file attachrecursivemnt preallocates a mountpoint for the root of the topmost mount of the source so that a mount that already sits at the destination can be put on top o...

EUVD-2026-108780

In the Linux kernel, the following vulnerability has been resolved: namespace: remove the fsnotify marks of a mount namespace in process context mntnsrelease drops the last passive reference of a mount namespace and removes its fanotify marks via fsnotifymntnsdelete. That takes the mutex of every...

CVE-2026-98986 namespace: remove the fsnotify marks of a mount namespace in process context

In the Linux kernel, the following vulnerability has been resolved: namespace: remove the fsnotify marks of a mount namespace in process context mntnsrelease drops the last passive reference of a mount namespace and removes its fanotify marks via fsnotifymntnsdelete. That takes the mutex of every...

CVE-2026-98986

The Linux kernel contains a vulnerability where fsnotify marks of a mount namespace are removed from an RCU softirq context instead of a process context. This occurs because mnt_ns_tree_remove() hands a reference to call_rcu(), causing fsnotify_mntns_delete() to trigger a BUG by calling a sleepin...

CVE-2026-98986 namespace: remove the fsnotify marks of a mount namespace in process context

In the Linux kernel, the following vulnerability has been resolved: namespace: remove the fsnotify marks of a mount namespace in process context mntnsrelease drops the last passive reference of a mount namespace and removes its fanotify marks via fsnotifymntnsdelete. That takes the mutex of every...

CVE-2026-98985 namespace: check the mounts before reading their parents in pivot_root()

In the Linux kernel, the following vulnerability has been resolved: namespace: check the mounts before reading their parents in pivotroot pathpivotroot reads the parents of newroot and of the caller's root and checks whether they are shared before it checks that either mount is in the caller's...

CVE-2026-98985

The Linux kernel is affected by a slab-use-after-free vulnerability in the path_pivot_root() function. The issue occurs because the kernel reads the parents of new_root and the caller's root before verifying if the mounts are in the caller's mount namespace. If new_root is a file descriptor to an...

CVE-2026-98985 namespace: check the mounts before reading their parents in pivot_root()

In the Linux kernel, the following vulnerability has been resolved: namespace: check the mounts before reading their parents in pivotroot pathpivotroot reads the parents of newroot and of the caller's root and checks whether they are shared before it checks that either mount is in the caller's...