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| author | Kees Cook <keescook@chromium.org> | 2014-09-18 22:25:37 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-30 19:40:12 +0300 |
| commit | b248aa29c61315f8ee998c9654a849b5f8348836 (patch) | |
| tree | d3e8063e2ca7b41b6478e5039fc6f2f9ceece655 /drivers/base | |
| parent | 05054b34b017c696a163297c0db71c475b84ad31 (diff) | |
| download | linux-b248aa29c61315f8ee998c9654a849b5f8348836.tar.xz | |
firmware_class: make sure fw requests contain a name
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@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/firmware_class.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index d276e33880be..2a1d1ae5c11d 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -1086,6 +1086,9 @@ _request_firmware(const struct firmware **firmware_p, const char *name, 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; |