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| author | Salva Peiró <speiro@ai2.upv.es> | 2014-03-11 18:31:23 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-17 23:13:23 (GMT) |
| commit | b19a47e0603ef89c4179e6e48f6dd1ccc7fa3a7c (patch) | |
| tree | 3f78e027e478b1cbb48e7a3135352e1c8ce91bd2 /drivers/tty/synclink.c | |
| parent | ebade5e833eda30f648d9bf4954f7d47a920b60f (diff) | |
| download | linux-b19a47e0603ef89c4179e6e48f6dd1ccc7fa3a7c.tar.xz | |
synclink: fix info leak in ioctl
The hdlcdev_ioctl() code fails to initialize the two padding bytes of
struct sync_serial_settings after the ->loopback member. Add an explicit
memset(0) before filling the structure to avoid the info leak.
Signed-off-by: Salva Peiró <speiro@ai2.upv.es>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/synclink.c')
| -rw-r--r-- | drivers/tty/synclink.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index 5ae14b4..d48e040 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -7866,6 +7866,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + memset(&new_line, 0, sizeof(new_line)); switch (flags){ case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; |