Commit 58f09e00 authored by Dan Carpenter's avatar Dan Carpenter Committed by Linus Torvalds

cciss: fix info leak in cciss_ioctl32_passthru()

The arg64 struct has a hole after ->buf_size which isn't cleared.  Or if
any of the calls to copy_from_user() fail then that would cause an
information leak as well.

This was assigned CVE-2013-2147.
Signed-off-by: default avatarDan Carpenter <>
Acked-by: default avatarMike Miller <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 627aad1c
......@@ -1189,6 +1189,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
int err;
u32 cp;
memset(&arg64, 0, sizeof(arg64));
err = 0;
err |=
copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
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