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Commit 18da65e7 authored by Dan Carpenter's avatar Dan Carpenter Committed by Jan Kara
Browse files

quota: info leak in quota_getquota() 



The if_dqblk struct has a 4 byte hole at the end of the struct so
uninitialized stack information is leaked to user space.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 1ce0aa80

fs/quota/quota.c

+1 −0
Original line number Diff line number Diff line
@@ -117,6 +117,7 @@ static int quota_setinfo(struct super_block *sb, int type, void __user *addr) 


static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src)

{

	memset(dst, 0, sizeof(*dst));

	dst->dqb_bhardlimit = src->d_blk_hardlimit;

	dst->dqb_bsoftlimit = src->d_blk_softlimit;

	dst->dqb_curspace = src->d_bcount;