From 352247f7d619d947d6f6ce05e18216a4fede2a7c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 7 Jan 2011 16:41:54 -0300 Subject: [PATCH] av7110: check for negative array offset commit cb26a24ee9706473f31d34cc259f4dcf45cd0644 upstream info->num comes from the user. It's type int. If the user passes in a negative value that would cause memory corruption. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Paul Gortmaker --- drivers/media/dvb/ttpci/av7110_ca.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/dvb/ttpci/av7110_ca.c b/drivers/media/dvb/ttpci/av7110_ca.c index ac7779c45c5b..d884aac45551 100644 --- a/drivers/media/dvb/ttpci/av7110_ca.c +++ b/drivers/media/dvb/ttpci/av7110_ca.c @@ -278,7 +278,7 @@ static int dvb_ca_ioctl(struct inode *inode, struct file *file, { ca_slot_info_t *info=(ca_slot_info_t *)parg; - if (info->num > 1) + if (info->num < 0 || info->num > 1) return -EINVAL; av7110->ci_slot[info->num].num = info->num; av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ? -- 2.39.5