mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
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From b1bc773cf61265e0e3871b2e52bd6b3270ffc6c3 Mon Sep 17 00:00:00 2001
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From: Zhen Kong <zkong@codeaurora.org>
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Date: Thu, 27 Mar 2014 12:44:15 -0700
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Subject: qseecom: Validate pointer offset in qseecom_send_modfd_cmd
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Validate cmd_req_buf pointer offset in qseecom_send_modfy_cmd, and
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make sure cmd buffer address to be within shared bufffer.
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Change-Id: I431511a92ab2cccbc2daebc0cf76cc3872689a97
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Signed-off-by: Zhen Kong <zkong@codeaurora.org>
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---
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drivers/misc/qseecom.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/drivers/misc/qseecom.c b/drivers/misc/qseecom.c
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index 5d2b64c..bce4994 100644
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--- a/drivers/misc/qseecom.c
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+++ b/drivers/misc/qseecom.c
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@@ -1635,6 +1635,13 @@ static int qseecom_send_modfd_cmd(struct qseecom_dev_handle *data,
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pr_err("response buffer address not within shared bufffer\n");
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return -EINVAL;
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}
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+
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+ if (req.cmd_req_len == 0 || req.cmd_req_len > data->client.sb_length ||
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+ req.resp_len > data->client.sb_length) {
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+ pr_err("cmd or response buffer length not valid\n");
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+ return -EINVAL;
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+ }
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+
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send_cmd_req.cmd_req_buf = req.cmd_req_buf;
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send_cmd_req.cmd_req_len = req.cmd_req_len;
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send_cmd_req.resp_buf = req.resp_buf;
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--
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cgit v1.1
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