| From | Ben Hutchings <> | Date | Sat, 08 Feb 2020 18:19:33 +0000 | Subject | [PATCH 3.16 034/148] xfs: Sanity check flags of Q_XQUOTARM call |
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3.16.82-rc1 review patch. If anyone has any objections, please let me know.
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From: Jan Kara <jack@suse.cz>
commit 3dd4d40b420846dd35869ccc8f8627feef2cff32 upstream.
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 <xuyang2018.jy@cn.fujitsu.com> Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- fs/xfs/xfs_quotaops.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/fs/xfs/xfs_quotaops.c +++ b/fs/xfs/xfs_quotaops.c @@ -119,6 +119,9 @@ 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)
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