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-rw-r--r--sbin/umount/umount.87
1 files changed, 7 insertions, 0 deletions
diff --git a/sbin/umount/umount.8 b/sbin/umount/umount.8
index bdaa34b5638d..007ce15c0bf6 100644
--- a/sbin/umount/umount.8
+++ b/sbin/umount/umount.8
@@ -126,6 +126,13 @@ is unmounted.
If the environment variable
.Pa PATH_FSTAB
is set all operations are performed against the specified file.
+.Pa PATH_FSTAB
+will not be honored if the process environment or memory address space is
+considred
+.Dq tainted .
+(See
+.Fn issetugid
+for more information.)
.El
.Sh FILES
.Bl -tag -width /etc/fstab -compact