Magnus Karlsson 99e3a236dd xsk: Add missing check on user supplied headroom size ... Add a check that the headroom cannot be larger than the available space in the chunk. In the current code, a malicious user can set the headroom to a value larger than the chunk size minus the fixed XDP headroom. That way packets with a length larger than the supported size in the umem could get accepted and result in an out-of-bounds write. Fixes: c0c77d8fb7 ("xsk: add user memory registration support sockopt") Reported-by: Bui Quang Minh <minhquangbui99@gmail.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://bugzilla.kernel.org/show_bug.cgi?id=207225 Link: https://lore.kernel.org/bpf/1586849715-23490-1-git-send-email-magnus.karlsson@intel.com		2020-04-15 13:07:18 +02:00
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Kconfig
Makefile
xdp_umem.c	xsk: Add missing check on user supplied headroom size	2020-04-15 13:07:18 +02:00
xdp_umem.h
xsk_diag.c
xsk_queue.c
xsk_queue.h	xdp: Replace zero-length array with flexible-array member	2020-02-28 12:08:37 -08:00
xsk.c	xsk: Fix out of boundary write in __xsk_rcv_memcpy	2020-04-06 21:48:05 +02:00
xsk.h