Nikola Livic 1fbea60ea6 pNFS/flexfiles: fix incorrect size check in decode_nfs_fh() ... [ Upstream commit ed34695e15 ] We (adam zabrocki, alexander matrosov, alexander tereshkin, maksym bazalii) observed the check: if (fh->size > sizeof(struct nfs_fh)) should not use the size of the nfs_fh struct which includes an extra two bytes from the size field. struct nfs_fh { unsigned short size; unsigned char data[NFS_MAXFHSIZE]; } but should determine the size from data[NFS_MAXFHSIZE] so the memcpy will not write 2 bytes beyond destination. The proposed fix is to compare against the NFS_MAXFHSIZE directly, as is done elsewhere in fs code base. Fixes: d67ae825a5 ("pnfs/flexfiles: Add the FlexFile Layout Driver") Signed-off-by: Nikola Livic <nlivic@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-19 10:13:03 +02:00
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Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
flexfilelayout.c	pNFS/flexfiles: fix incorrect size check in decode_nfs_fh()	2021-05-19 10:13:03 +02:00
flexfilelayout.h	pNFS/flexfiles: Simplify allocation of the mirror array	2020-03-26 10:52:04 -04:00
flexfilelayoutdev.c	pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error	2019-07-18 14:43:52 -04:00