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a122eb2 xfs: prevent reading uninitialized stack memory
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commit a122eb2fdfd78b58c6dd992d6f4b1aaef667eef9
Author: Dan Rosenberg <dan.j.rosenberg@xxxxxxxxx>
Date: Mon Sep 6 18:24:57 2010 -0400
xfs: prevent reading uninitialized stack memory
The XFS_IOC_FSGETXATTR ioctl allows unprivileged users to read 12
bytes of uninitialized stack memory, because the fsxattr struct
declared on the stack in xfs_ioc_fsgetxattr() does not alter (or zero)
the 12-byte fsx_pad member before copying it back to the user. This
patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@xxxxxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Signed-off-by: Alex Elder <aelder@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/linux-2.6/xfs_ioctl.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
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