From a5cc68f3d63306d0d288f31edfc2ae6ef8ecd887 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Wed, 26 Jun 2013 23:52:30 +0200 Subject: [PATCH] af_key: fix info leaks in notify messages key_notify_sa_flush() and key_notify_policy_flush() miss to initialize the sadb_msg_reserved member of the broadcasted message and thereby leak 2 bytes of heap memory to listeners. Fix that. Signed-off-by: Mathias Krause Cc: Steffen Klassert Cc: "David S. Miller" Cc: Herbert Xu Signed-off-by: David S. Miller --- net/key/af_key.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/key/af_key.c b/net/key/af_key.c index c5fbd7589681..9da862070dd8 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -1710,6 +1710,7 @@ static int key_notify_sa_flush(const struct km_event *c) hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); + hdr->sadb_msg_reserved = 0; pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); @@ -2699,6 +2700,7 @@ static int key_notify_policy_flush(const struct km_event *c) hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); + hdr->sadb_msg_reserved = 0; pfkey_broadcast(skb_out, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); return 0; -- 2.39.5