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author | David S. Miller <davem@davemloft.net> | 2005-09-16 23:51:01 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2005-09-16 23:51:01 (GMT) |
commit | 37f7f421cce13435fdc0d870caf51141e5ebf079 (patch) | |
tree | 402e68f26b4bd54df721589f8f0b2a9c67a01678 /net/socket.c | |
parent | 065d9cac98a5406ecd5a1368f8fd38f55739dee9 (diff) | |
download | linux-fsl-qoriq-37f7f421cce13435fdc0d870caf51141e5ebf079.tar.xz |
[NET]: Do not leak MSG_CMSG_COMPAT into userspace.
Noticed by Sridhar Samudrala.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r-- | net/socket.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c index c699e93..f926447 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1862,7 +1862,8 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag if (err < 0) goto out_freeiov; } - err = __put_user(msg_sys.msg_flags, COMPAT_FLAGS(msg)); + err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT), + COMPAT_FLAGS(msg)); if (err) goto out_freeiov; if (MSG_CMSG_COMPAT & flags) |