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authorTomasz Grobelny <tomasz@grobelny.oswiecenia.net>2010-12-04 13:39:13 +0100
committerGerrit Renker <gerrit@erg.abdn.ac.uk>2010-12-07 13:47:12 +0100
commit04910265078f08a73208beab70ed2a3cce4a919f (patch)
treecc7e1c927ceda1ddf5f86d50f8ee22a1a4e32fe6 /net/dccp/proto.c
parentdccp: Policy-based packet dequeueing infrastructure (diff)
downloadlinux-dev-04910265078f08a73208beab70ed2a3cce4a919f.tar.xz
linux-dev-04910265078f08a73208beab70ed2a3cce4a919f.zip
dccp qpolicy: Parameter checking of cmsg qpolicy parameters
Ensure that cmsg->cmsg_type value is valid for qpolicy that is currently in use. Signed-off-by: Tomasz Grobelny <tomasz@grobelny.oswiecenia.net> Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'net/dccp/proto.c')
-rw-r--r--net/dccp/proto.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index d6a224982bb5..152975d942d9 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -726,6 +726,10 @@ static int dccp_msghdr_parse(struct msghdr *msg, struct sk_buff *skb)
if (cmsg->cmsg_level != SOL_DCCP)
continue;
+ if (cmsg->cmsg_type <= DCCP_SCM_QPOLICY_MAX &&
+ !dccp_qpolicy_param_ok(skb->sk, cmsg->cmsg_type))
+ return -EINVAL;
+
switch (cmsg->cmsg_type) {
case DCCP_SCM_PRIORITY:
if (cmsg->cmsg_len != CMSG_LEN(sizeof(__u32)))