CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

PT-2026-72862

In the Linux kernel, the following vulnerability has been resolved: afs: fix NULL pointer dereference in afs get tree afs alloc sbi uses kzalloc for memory allocation. And, if ctx-dyn root is not null, as-cell and as-volume are null. In trace afs get tree they are dereferenced. KASAN error messag...

CVE-2025-40195 mount: handle NULL values in mnt_ns_release()

In the Linux kernel, the following vulnerability has been resolved: mount: handle NULL values in mntnsrelease When calling in listmount mntnsrelease may be passed a NULL pointer. Handle that case gracefully...