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Commit f843ee6d authored by Andy Whitcroft's avatar Andy Whitcroft Committed by Linus Torvalds
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xfrm_user: validate XFRM_MSG_NEWAE incoming ESN size harder



Kees Cook has pointed out that xfrm_replay_state_esn_len() is subject to
wrapping issues.  To ensure we are correctly ensuring that the two ESN
structures are the same size compare both the overall size as reported
by xfrm_replay_state_esn_len() and the internal length are the same.

CVE-2017-7184
Signed-off-by: default avatarAndy Whitcroft <apw@canonical.com>
Acked-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 677e806d
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