linux-kernel - [PATCH 3.18 23/29] Revert "UBIFS: Fix potential integer overflow in allocation"

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Message-Id: <20180907210911.087838848@linuxfoundation.org>
Date:   Fri,  7 Sep 2018 23:10:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kees Cook <keescook@...omium.org>,
        Silvio Cesare <silvio.cesare@...il.com>,
        Richard Weinberger <richard@....at>
Subject: [PATCH 3.18 23/29] Revert "UBIFS: Fix potential integer overflow in allocation"

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Weinberger <richard@....at>

commit 08acbdd6fd736b90f8d725da5a0de4de2dd6de62 upstream.

This reverts commit 353748a359f1821ee934afc579cf04572406b420.
It bypassed the linux-mtd review process and fixes the issue not as it
should.

Cc: Kees Cook <keescook@...omium.org>
Cc: Silvio Cesare <silvio.cesare@...il.com>
Cc: stable@...r.kernel.org
Signed-off-by: Richard Weinberger <richard@....at>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/ubifs/journal.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -1101,7 +1101,7 @@ static int recomp_data_node(struct ubifs
 	int err, len, compr_type, out_len;
 
 	out_len = le32_to_cpu(dn->size);
-	buf = kmalloc_array(out_len, WORST_COMPR_FACTOR, GFP_NOFS);
+	buf = kmalloc(out_len * WORST_COMPR_FACTOR, GFP_NOFS);
 	if (!buf)
 		return -ENOMEM;