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  1. MariaDB Server
  2. MDEV-31379

Undefined behavior in the reference Ed25519 implementation

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    Description

      This is from the MaxScale sources but the same undefined behavior that UBSAN reports should be in MariaDB as well:

      /home/timofey_turenko_mariadb_com/MaxScale/server/modules/authenticator/Ed25519/ref10/fe_sq.c:121:76: runtime error: left shift of negative value -46510040
      		 
          #0 0x7f0921c31b8b in mxs_ed25519_ref10_fe_sq /home/timofey_turenko_mariadb_com/MaxScale/server/modules/authenticator/Ed25519/ref10/fe_sq.c:121
      		 
          #1 0x7f0921c0dc63 in mxs_ed25519_ref10_ge_frombytes_negate_vartime /home/timofey_turenko_mariadb_com/MaxScale/server/modules/authenticator/Ed25519/ref10/ge_frombytes.c:21
      		 
          #2 0x7f0921c0addd in crypto_sign_open /home/timofey_turenko_mariadb_com/MaxScale/server/modules/authenticator/Ed25519/ref10/open.c:24

      It seems this problem has also been found by others:
      https://github.com/hyperledger/iroha-ed25519/commit/b61a1e77af5dc458ed6a5aee395d5b22775a4917
      https://github.com/randombit/botan/issues/1372

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31801 Undefined behavior in ed25519

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          is part of

          Task - A task that needs to be done. MDEV-33073 always green buildbot

          • Critical - Crashes, loss of data, severe memory leak.
          • In Progress
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MXS-4686 Undefined behavior in ed25519 plugin

          • Trivial - Cosmetic problem like misspelt words or misaligned text.
          • Closed

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              serg Sergei Golubchik
              markus makela markus makela
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                Resolved:

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