Commit fe685aab authored by Mathias Krause's avatar Mathias Krause Committed by Jan Kara
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isofs: avoid info leak on export 



For type 1 the parent_offset member in struct isofs_fid gets copied
uninitialized to userland. Fix this by initializing it to 0.

Signed-off-by: default avatarMathias Krause <minipli@googlemail.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 57b9655d

fs/isofs/export.c

+1 −0
Original line number Diff line number Diff line
@@ -134,6 +134,7 @@ isofs_export_encode_fh(struct inode *inode, 
	len = 3;

	fh32[0] = ei->i_iget5_block;

 	fh16[2] = (__u16)ei->i_iget5_offset;  /* fh16 [sic] */

	fh16[3] = 0;  /* avoid leaking uninitialized data */

	fh32[2] = inode->i_generation;

	if (parent) {

		struct iso_inode_info *eparent;