From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D16EC154B4 for ; Wed, 9 Aug 2023 11:12:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D626C433C8; Wed, 9 Aug 2023 11:12:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691579574; bh=2oFbXrmCSDchK/CBrqCeL6KxT7gXtwPrJzplSrpWu+I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OMX9FYN4bm0m4958frfJ+SYZIr+r4PCzu8Z96xUQ7DvkSzZUXXtCiRXpUtxrP2v8K rjcDsctgguH+6WAaS1PQUPcHZLyBc5/rvuNjNwH5flbNpiHvMDkeAHrc2xWrw+ZiE8 bvfiJrcILB9NhEP5yfQuRetZHcBZMGDJy29NmlAA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Li Nan , Yu Kuai , Song Liu , Sasha Levin Subject: [PATCH 4.19 011/323] md/raid10: fix wrong setting of max_corr_read_errors Date: Wed, 9 Aug 2023 12:37:29 +0200 Message-ID: <20230809103658.604189750@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103658.104386911@linuxfoundation.org> References: <20230809103658.104386911@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Li Nan [ Upstream commit f8b20a405428803bd9881881d8242c9d72c6b2b2 ] There is no input check when echo md/max_read_errors and overflow might occur. Add check of input number. Fixes: 1e50915fe0bb ("raid: improve MD/raid10 handling of correctable read errors.") Signed-off-by: Li Nan Reviewed-by: Yu Kuai Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20230522072535.1523740-3-linan666@huaweicloud.com Signed-off-by: Sasha Levin --- drivers/md/md.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index ad3e666b9d735..2e23a898fc978 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4337,6 +4337,8 @@ max_corrected_read_errors_store(struct mddev *mddev, const char *buf, size_t len rv = kstrtouint(buf, 10, &n); if (rv < 0) return rv; + if (n > INT_MAX) + return -EINVAL; atomic_set(&mddev->max_corr_read_errors, n); return len; } -- 2.39.2