diff options
| author | Ivo van Doorn <ivdoorn@gmail.com> | 2009-01-23 16:03:24 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-01-29 21:01:26 (GMT) |
| commit | 9752a7bd7f36557f34283f5d75dfa32578437f08 (patch) | |
| tree | e936bbb3fb126c85d2ed3afd1e473c657776c647 | |
| parent | 6ba265e9cc764bc401cda284954cf2bdd4408c38 (diff) | |
| download | linux-9752a7bd7f36557f34283f5d75dfa32578437f08.tar.xz | |
rt2x00: Restrict firmware file lengths
Add extra security to the drivers for firmware loading,
check the firmware file length before uploading it to
the hardware. Incorrect lengths might indicate a firmware
upgrade (which is not yet supported by the driver) or
otherwise incorrect firmware.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt61pci.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt73usb.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 3a7ecca..d81a8de 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1199,6 +1199,11 @@ static int rt61pci_load_firmware(struct rt2x00_dev *rt2x00dev, const void *data, int i; u32 reg; + if (len != 8192) { + ERROR(rt2x00dev, "Invalid firmware file length (len=%zu)\n", len); + return -ENOENT; + } + /* * Wait for stable hardware. */ diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c index 60c43c1..f854551 100644 --- a/drivers/net/wireless/rt2x00/rt73usb.c +++ b/drivers/net/wireless/rt2x00/rt73usb.c @@ -1085,6 +1085,11 @@ static int rt73usb_load_firmware(struct rt2x00_dev *rt2x00dev, const void *data, int status; u32 reg; + if (len != 2048) { + ERROR(rt2x00dev, "Invalid firmware file length (len=%zu)\n", len); + return -ENOENT; + } + /* * Wait for stable hardware. */ |