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(parent: 52ba074) | patch
xen: fix potential integer overflow in queue_reply
authorInsu Yun <wuninsu@gmail.com>
Mon, 18 Jan 2016 16:54:43 +0000 (11:54 -0500)
committerDavid Vrabel <david.vrabel@citrix.com>
Mon, 15 Feb 2016 13:56:57 +0000 (13:56 +0000)
commit85c0a87cd117e83361932b2b160c9af178fdb21a
tree3f29931c9be46cb4ed83c1bf75cf05b85293e2fdtree | snapshot
parent52ba0746b3b44c86aee121babf3b2fd9b8f84090commit | diff
xen: fix potential integer overflow in queue_reply

When len is greater than UINT_MAX - sizeof(*rb), in next allocation,
it can overflow integer range and allocates small size of heap.
After that, memcpy will overflow the allocated heap.
Therefore, it needs to check the size of given length.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
drivers/xen/xenbus/xenbus_dev_frontend.c diff | blob | history
Beck SC1x5 Kernel