From 9c1e353897decb0a1c0533f02020a810bf3fb871 Mon Sep 17 00:00:00 2001
From: Biswajit Paul <biswajitpaul@codeaurora.org>
Date: Mon, 9 Feb 2015 15:21:12 -0800
Subject: [PATCH] kernel: Restrict permissions of /proc/iomem.
The permissions of /proc/iomem currently are -r--r--r--. Everyone can
see its content. As iomem contains information about the physical memory
content of the device, restrict the information only to root.
Change-Id: If0be35c3fac5274151bea87b738a48e6ec0ae891
bug: 28814213
CRs-Fixed: 786116
Signed-off-by: Biswajit Paul <biswajitpaul@codeaurora.org>
Signed-off-by: Avijit Kanti Das <avijitnsec@codeaurora.org>
---
kernel/resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/resource.c b/kernel/resource.c
index a5a8086044ca..91c35c343d12 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -153,7 +153,7 @@ static const struct file_operations proc_iomem_operations = {
static int __init ioresources_init(void)
{
proc_create("ioports", 0, NULL, &proc_ioports_operations);
- proc_create("iomem", 0, NULL, &proc_iomem_operations);
+ proc_create("iomem", S_IRUSR, NULL, &proc_iomem_operations);
return 0;
}
__initcall(ioresources_init);
--
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