DEBIAN-CVE-2026-98987

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...

DEBIAN-CVE-2026-98984

In the Linux kernel, the following vulnerability has been resolved: dcache: don't put a mountpoint on a dentry that's being removed rmdir, unlink and rename call dontmount on the victim and then detachmounts with the victim's inode locked. dolockmount takes the inode lock of the mountpoint and...

CVE-2026-98982

In the Linux kernel, the following vulnerability has been resolved: namespace: don't let a pseudo dentry become the root of a mount dallocpseudo hands out dentries for pipes, sockets and other files that are never anyone's child or parent. They carry DCACHENORCU and dentryfree frees them right aw...

CVE-2026-98984

In the Linux kernel, the following vulnerability has been resolved: dcache: don't put a mountpoint on a dentry that's being removed rmdir, unlink and rename call dontmount on the victim and then detachmounts with the victim's inode locked. dolockmount takes the inode lock of the mountpoint and...

CVE-2026-98985

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-2026-98988

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-2026-98990

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-2026-98983

In the Linux kernel, the following vulnerability has been resolved: unshare: don't drop active namespace references that were never taken Active references on the namespaces of an nsproxy are taken when the nsproxy is installed into a task in switchtasknamespaces and copynamespaces and dropped...

CVE-2026-98986

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-2026-98987

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-2026-98989

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...

DEBIAN-CVE-2026-98974

In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchange-range-to-eof file size exchange Norbert Szetei posted a patch containing an incomplete description of a bug in XFSIOCEXCHANGERANGE's TOEOF flag. The bug tricks exchange-range into modifying a file so that it has...

DEBIAN-CVE-2026-98977

In the Linux kernel, the following vulnerability has been resolved: namespace: handle mount locking for automounts correctly If mounts are propagated across user namespaces, attachrecursivemnt locks every copy of the source mount to protect overmounts from vanishing and revealing the underlying...

DEBIAN-CVE-2026-98979

In the Linux kernel, the following vulnerability has been resolved: namespace: refuse an automount below a mount that is in no namespace It's possible to add autmounts even when the parent mount isn't in the mount namespace of the caller. The only requirement we have is that the parent mount...

DEBIAN-CVE-2026-98976

In the Linux kernel, the following vulnerability has been resolved: namespace: keep the lock on a mount that a propagated copy is moved beneath attachrecursivemnt transfers MNTLOCKED from the top mount to the mount that is moved beneath it with MOVEMOUNTBENEATH. This allows the owner of a user...

DEBIAN-CVE-2026-98978

In the Linux kernel, the following vulnerability has been resolved: namespace: never expire a locked mount Locked mounts are special. They protect the underlying files and directories from being revealed. doumount refuses to unmount locked mounts but shrinksubmounts doesn't. A shrinkable mount ca...

DEBIAN-CVE-2026-98975

In the Linux kernel, the following vulnerability has been resolved: xfs: stop exchanging reflink flags when exchanging mappings When an exchange covers both files from offset 0 to idisksize, xmicanexchangereflinkflags assumes every mapping moved and hands the reflink flag over to the other file...

DEBIAN-CVE-2026-98980

In the Linux kernel, the following vulnerability has been resolved: namei: don't reveal overmounted entries in refwalk In rcuwalk the dentry is validated before it is accepted. stepinto stepinto rechecks dseq and followmountrcu rechecks mountlock. An entry that gets unlinked in between causes the...

DEBIAN-CVE-2026-98981

In the Linux kernel, the following vulnerability has been resolved: namespace: unhash a dentry before detaching the mounts on it unlink, rmdir and rename remove the entry from the filesystem, call detachmounts on the entry with the inode locked and then call ddelete once the inode is unlocked. Th...

CVE-2026-98974

In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchange-range-to-eof file size exchange Norbert Szetei posted a patch containing an incomplete description of a bug in XFSIOCEXCHANGERANGE's TOEOF flag. The bug tricks exchange-range into modifying a file so that it has...