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List: linux-api
Subject: [PATCH 3/5] kdbus: check if lsm permits installing received fds
From: Karol Lewandowski <k.lewandowsk () samsung ! com>
Date: 2014-10-31 17:19:09
Message-ID: 1414775949-26750-1-git-send-email-k.lewandowsk () samsung ! com
[Download RAW message or body]
From: Karol Lewandowski <lmctlx@gmail.com>
Signed-off-by: Karol Lewandowski <lmctlx@gmail.com>
---
drivers/misc/kdbus/queue.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/misc/kdbus/queue.c b/drivers/misc/kdbus/queue.c
index 6693852..dae18bd 100644
--- a/drivers/misc/kdbus/queue.c
+++ b/drivers/misc/kdbus/queue.c
@@ -25,6 +25,7 @@
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/sizes.h>
+#include <linux/security.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
@@ -41,6 +42,18 @@ static int kdbus_queue_entry_fds_install(struct kdbus_queue_entry *entry)
int ret, *fds;
size_t count;
+ for (i = 0; i < entry->fds_count; i++) {
+ ret = security_file_receive(entry->fds_fp[i]);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < entry->memfds_count; i++) {
+ ret = security_file_receive(entry->memfds_fp[i]);
+ if (ret)
+ return ret;
+ }
+
/* get array of file descriptors */
count = entry->fds_count + entry->memfds_count;
if (!count)
--
2.1.1
--
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