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Message-Id: <1387271191-10355-1-git-send-email-speiro@ai2.upv.es> Date: Tue, 17 Dec 2013 10:06:30 +0100 From: Salva Peiró <speiro@....upv.es> To: linux-kernel@...r.kernel.org Cc: Salva Peiró <speiro@....upv.es>, security@...nel.org, linux-hams@...r.kernel.org, netdev@...r.kernel.org, Jean-Paul Roubelat <jpr@...bb.org>, stable@...r.kernel.org Subject: [PATCH v2] hamradio/yam: fix info leak in ioctl The yam_ioctl() code fails to initialise the cmd field of the struct yamdrv_ioctl_cfg. Add an explicit memset(0) before filling the structure to avoid the 4-byte info leak. Signed-off-by: Salva Peiró <speiro@....upv.es> CC: <stable@...r.kernel.org> --- drivers/net/hamradio/yam.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 1971411..61dd244 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -1057,6 +1057,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) break; case SIOCYAMGCFG: + memset(&yi, 0, sizeof(yi)); yi.cfg.mask = 0xffffffff; yi.cfg.iobase = yp->iobase; yi.cfg.irq = yp->irq; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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