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Werner Koch d32963eeb3
gpg: Do not allow creation of user ids larger than our parser allows.
* g10/parse-packet.c: Move max packet lengths constants to ...
* g10/packet.h: ... here.
* g10/build-packet.c (do_user_id): Return an error if too data is too
large.
* g10/keygen.c (write_uid): Return an error for too large data.
--

This can lead to keyring corruption becuase we expect that our parser
is abale to parse packts created by us.  Test case is

  gpg --batch --passphrase 'abc' -v  \
      --quick-gen-key $(yes 'a'| head -4000|tr -d '\n')

GnuPG-bug-id: 4532
Signed-off-by: Werner Koch <wk@gnupg.org>
2019-05-21 16:28:11 +02:00
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