This is a note to let you know that I've just added the patch titled
firmware_class: make sure fw requests contain a name
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
firmware_class-make-sure-fw-requests-contain-a-name.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 471b095dfe0d693a8d624cbc716d1ee4d74eb437 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Thu, 18 Sep 2014 11:25:37 -0700
Subject: firmware_class: make sure fw requests contain a name
From: Kees Cook <keescook@xxxxxxxxxxxx>
commit 471b095dfe0d693a8d624cbc716d1ee4d74eb437 upstream.
An empty firmware request name will trigger warnings when building
device names. Make sure this is caught earlier and rejected.
The warning was visible via the test_firmware.ko module interface:
echo -ne "\x00" > /sys/devices/virtual/misc/test_firmware/trigger_request
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Tested-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/firmware_class.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -1081,6 +1081,9 @@ _request_firmware(const struct firmware
if (!firmware_p)
return -EINVAL;
+ if (!name || name[0] == '\0')
+ return -EINVAL;
+
ret = _request_firmware_prepare(&fw, name, device);
if (ret <= 0) /* error or already assigned */
goto out;
Patches currently in stable-queue which might be from keescook@xxxxxxxxxxxx are
queue-3.14/firmware_class-make-sure-fw-requests-contain-a-name.patch
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