The branch releng/14.4 has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=0235e9e56947c5419e2bef7562c2b7221b82c90f
commit 0235e9e56947c5419e2bef7562c2b7221b82c90f Author: Konstantin Belousov <[email protected]> AuthorDate: 2026-02-02 22:38:32 +0000 Commit: Colin Percival <[email protected]> CommitDate: 2026-02-18 01:47:16 +0000 unmount(2): do not allow MNT_DEFERRED or MNT_RECURSE flags from userspace (cherry picked from commit cd8d44173adc375b59a24b1363476c086a7c86b4) (cherry picked from commit a893e8463ab2741204debd17901539708ec3a970) --- sys/kern/vfs_mount.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c index 85d14a943d01..5ca7c43269ce 100644 --- a/sys/kern/vfs_mount.c +++ b/sys/kern/vfs_mount.c @@ -1733,6 +1733,8 @@ kern_unmount(struct thread *td, const char *path, int flags) int error; AUDIT_ARG_VALUE(flags); + if ((flags & (MNT_DEFERRED | MNT_RECURSE)) != 0) + return (EINVAL); if (jailed(td->td_ucred) || usermount == 0) { error = priv_check(td, PRIV_VFS_UNMOUNT); if (error)
