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Date: Wed, 27 Oct 2010 19:40:48 +0400 From: Vasiliy Kulikov <segooon@...il.com> To: kernel-janitors@...r.kernel.org Cc: Mike Miller <mike.miller@...com>, Jens Axboe <jaxboe@...ionio.com>, "Stephen M. Cameron" <scameron@...rdog.cce.hp.com>, Andrew Morton <akpm@...ux-foundation.org>, iss_storagedev@...com, linux-kernel@...r.kernel.org Subject: [PATCH] block: cciss: fix information leak to userland Structure IOCTL_Command_struct is copied to userland with some padding fields at the end of the struct unitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@...il.com> --- Compile tested. drivers/block/cciss.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index f09e6df..13d87a0 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1184,6 +1184,7 @@ static int cciss_ioctl32_big_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, -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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