This is a note to let you know that I've just added the patch titled
usbip: prevent leaking socket pointer address in messages
to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: usbip-prevent-leaking-socket-pointer-address-in-messages.patch and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 90120d15f4c397272aaf41077960a157fc4212bf Mon Sep 17 00:00:00 2001
From: Shuah Khan shuahkh@osg.samsung.com Date: Fri, 15 Dec 2017 10:50:09 -0700 Subject: usbip: prevent leaking socket pointer address in messages
From: Shuah Khan shuahkh@osg.samsung.com
commit 90120d15f4c397272aaf41077960a157fc4212bf upstream.
usbip driver is leaking socket pointer address in messages. Remove the messages that aren't useful and print sockfd in the ones that are useful for debugging.
Signed-off-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/usbip/stub_dev.c | 3 +-- drivers/usb/usbip/usbip_common.c | 15 ++++----------- drivers/usb/usbip/vhci_hcd.c | 2 +- 3 files changed, 6 insertions(+), 14 deletions(-)
--- a/drivers/usb/usbip/stub_dev.c +++ b/drivers/usb/usbip/stub_dev.c @@ -163,8 +163,7 @@ static void stub_shutdown_connection(str * step 1? */ if (ud->tcp_socket) { - dev_dbg(&sdev->udev->dev, "shutdown tcp_socket %p\n", - ud->tcp_socket); + dev_dbg(&sdev->udev->dev, "shutdown sockfd %d\n", ud->sockfd); kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); }
--- a/drivers/usb/usbip/usbip_common.c +++ b/drivers/usb/usbip/usbip_common.c @@ -317,18 +317,14 @@ int usbip_recv(struct socket *sock, void struct msghdr msg; struct kvec iov; int total = 0; - /* for blocks of if (usbip_dbg_flag_xmit) */ char *bp = buf; int osize = size;
- usbip_dbg_xmit("enter\n"); - - if (!sock || !buf || !size) { - pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf, - size); + if (!sock || !buf || !size) return -EINVAL; - } + + usbip_dbg_xmit("enter\n");
do { sock->sk->sk_allocation = GFP_NOIO; @@ -341,11 +337,8 @@ int usbip_recv(struct socket *sock, void msg.msg_flags = MSG_NOSIGNAL;
result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL); - if (result <= 0) { - pr_debug("receive sock %p buf %p size %u ret %d total %d\n", - sock, buf, size, result, total); + if (result <= 0) goto err; - }
size -= result; buf += result; --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -782,7 +782,7 @@ static void vhci_shutdown_connection(str
/* need this? see stub_dev.c */ if (ud->tcp_socket) { - pr_debug("shutdown tcp_socket %p\n", ud->tcp_socket); + pr_debug("shutdown sockfd %d\n", ud->sockfd); kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); }
Patches currently in stable-queue which might be from shuahkh@osg.samsung.com are
queue-3.18/usbip-fix-stub_rx-harden-cmd_submit-path-to-handle-malicious-input.patch queue-3.18/usbip-vhci-stop-printing-kernel-pointer-addresses-in-messages.patch queue-3.18/usbip-fix-potential-format-overflow-in-userspace-tools.patch queue-3.18/usbip-vhci-hcd-add-usb3-superspeed-support.patch queue-3.18/usbip-prevent-leaking-socket-pointer-address-in-messages.patch queue-3.18/usbip-fix-stub_rx-get_pipe-to-validate-endpoint-number.patch queue-3.18/usbip-stub-stop-printing-kernel-pointer-addresses-in-messages.patch queue-3.18/usbip-prevent-vhci_hcd-driver-from-leaking-a-socket-pointer-address.patch queue-3.18/usb-usbip-fix-possible-deadlocks-reported-by-lockdep.patch