Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 48f10e8c authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Linus Torvalds
Browse files

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: default avatarMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f7397681

fs/hpfs/inode.c

+4 −0
Original line number Diff line number Diff line
@@ -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;