rc_map_get() takes a single string literal for the module to load,
so make sure it cannot be used as a format string in the call to
request_module().
Signed-off-by: Kees Cook <keesc...@chromium.org>
---
On another security note, this raw request_module() call should have
some kind of prefix associated with it to make sure it can't be used to
load arbitrary modules. For example, request_module("probe-%s", name)
or something, as done for crypto, binfmts, etc.
---
drivers/media/rc/rc-main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 02e2f38c9c85..dca97aa0a51e 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -62,7 +62,7 @@ struct rc_map *rc_map_get(const char *name)
map = seek_rc_map(name);
#ifdef MODULE
if (!map) {
- int rc = request_module(name);
+ int rc = request_module("%s", name);
if (rc < 0) {
printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
return NULL;
--
1.7.9.5
--
Kees Cook
Chrome OS Security
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