From 48f10e8ce7461b393186c4c7c6d6f6634082159c Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Sun, 8 May 2011 20:44:00 +0200 Subject: [PATCH] HPFS: Restrict uid and gid to 16-bit values Restrict uid and gid to 16-bit values. HPFS stores only 2 bytes in the EAs. Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds --- fs/hpfs/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index d093ce749412..bc61bb4fd38d 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -261,6 +261,10 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr) hpfs_lock(inode->i_sb); if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root) goto out_unlock; + if ((attr->ia_valid & ATTR_UID) && attr->ia_uid >= 0x10000) + goto out_unlock; + if ((attr->ia_valid & ATTR_GID) && attr->ia_gid >= 0x10000) + goto out_unlock; if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) goto out_unlock;