From 3dd4d40b420846dd35869ccc8f8627feef2cff32 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 23 Oct 2019 17:00:45 -0700 Subject: xfs: Sanity check flags of Q_XQUOTARM call Flags passed to Q_XQUOTARM were not sanity checked for invalid values. Fix that. Fixes: 9da93f9b7cdf ("xfs: fix Q_XQUOTARM ioctl") Reported-by: Yang Xu Signed-off-by: Jan Kara Reviewed-by: Eric Sandeen Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_quotaops.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/xfs/xfs_quotaops.c') diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c index cd6c7210a373..c7de17deeae6 100644 --- a/fs/xfs/xfs_quotaops.c +++ b/fs/xfs/xfs_quotaops.c @@ -201,6 +201,9 @@ xfs_fs_rm_xquota( if (XFS_IS_QUOTA_ON(mp)) return -EINVAL; + if (uflags & ~(FS_USER_QUOTA | FS_GROUP_QUOTA | FS_PROJ_QUOTA)) + return -EINVAL; + if (uflags & FS_USER_QUOTA) flags |= XFS_DQ_USER; if (uflags & FS_GROUP_QUOTA) -- cgit v1.2.3