From: Jakub Kicinski <kuba@kernel.org>
Date: Mon, 2 Mar 2020 21:05:12 -0800
Subject: devlink: validate length of region addr/len
Patch-mainline: v5.6-rc6
Git-commit: ff3b63b8c299b73ac599b120653b47e275407656
References: bsc#1109837
DEVLINK_ATTR_REGION_CHUNK_ADDR and DEVLINK_ATTR_REGION_CHUNK_LEN
lack entries in the netlink policy. Corresponding nla_get_u64()s
may read beyond the end of the message.
Fixes: 4e54795a27f5 ("devlink: Add support for region snapshot read command")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/core/devlink.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3649,6 +3649,8 @@ static const struct nla_policy devlink_n
[DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
};
static const struct genl_ops devlink_nl_ops[] = {