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40 lines
1.4 KiB
Diff
40 lines
1.4 KiB
Diff
From 83214431cd02674c70402b160b16b7427e28737f Mon Sep 17 00:00:00 2001
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From: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
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Date: Thu, 3 Oct 2013 16:52:16 -0700
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Subject: qseecom: Ensure incoming "app_name" does not corrupt the kernel stack
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Printing a string with that does not have null terminated character,
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would lead to overflow, as the print continues until it finds a null
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terminated character.
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Avoid this issue by explicitly assigning a string with null termination.
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Change-Id: I9528db2ba046c514d829097d08c09540588bb1a2
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Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
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---
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drivers/misc/qseecom.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/misc/qseecom.c b/drivers/misc/qseecom.c
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index 4c1943b..7ab8089 100644
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--- a/drivers/misc/qseecom.c
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+++ b/drivers/misc/qseecom.c
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@@ -773,6 +773,7 @@ static int qseecom_load_app(struct qseecom_dev_handle *data, void __user *argp)
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if (ret)
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return ret;
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req.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
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+ load_img_req.img_name[MAX_APP_NAME_SIZE-1] = '\0';
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memcpy(req.app_name, load_img_req.img_name, MAX_APP_NAME_SIZE);
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ret = __qseecom_check_app_exists(req);
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@@ -2453,6 +2454,7 @@ static int qseecom_query_app_loaded(struct qseecom_dev_handle *data,
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}
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req.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
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+ query_req.app_name[MAX_APP_NAME_SIZE-1] = '\0';
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memcpy(req.app_name, query_req.app_name, MAX_APP_NAME_SIZE);
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ret = __qseecom_check_app_exists(req);
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--
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cgit v1.1
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