From facb4edc1e0e849ea98e147a821e60d6d6272c0a Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 10 Jan 2011 04:06:58 +0000 Subject: phonet: some signedness bugs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dan Rosenberg pointed out that there were some signed comparison bugs in the phonet protocol. http://marc.info/?l=full-disclosure&m=129424528425330&w=2 The problem is that we check for array overflows but "protocol" is signed and we don't check for array underflows. If you have already have CAP_SYS_ADMIN then you could use the bugs to get root, or someone could cause an oops by mistake. Signed-off-by: Dan Carpenter Acked-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- include/net/phonet/phonet.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/net/phonet') diff --git a/include/net/phonet/phonet.h b/include/net/phonet/phonet.h index d5df797f9540..5395e09187df 100644 --- a/include/net/phonet/phonet.h +++ b/include/net/phonet/phonet.h @@ -107,8 +107,8 @@ struct phonet_protocol { int sock_type; }; -int phonet_proto_register(int protocol, struct phonet_protocol *pp); -void phonet_proto_unregister(int protocol, struct phonet_protocol *pp); +int phonet_proto_register(unsigned int protocol, struct phonet_protocol *pp); +void phonet_proto_unregister(unsigned int protocol, struct phonet_protocol *pp); int phonet_sysctl_init(void); void phonet_sysctl_exit(void); -- cgit v1.2.3-58-ga151