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  14. Feb 28, 2018
    • David Benjamin's avatar
      Always use adr with __thumb2__. · fa9ab9ee
      David Benjamin authored
      Thumb2 addresses are a bit a mess, depending on whether a label is
      interpreted as a function pointer value (for use with BX and BLX) or as
      a program counter value (for use with PC-relative addressing). Clang's
      integrated assembler mis-assembles this code. See
      https://crbug.com/124610#c54 for details.
      
      Instead, use the ADR pseudo-instruction which has clear semantics and
      should be supported by every assembler that handles the OpenSSL Thumb2
      code. (In other files, the ADR vs SUB conditionals are based on
      __thumb2__ already. For some reason, this one is based on __APPLE__, I'm
      guessing to deal with an older version of clang assembler.)
      
      It's unclear to me which of clang or binutils is "correct" or if this is
      even a well-defined notion beyond "whatever binutils does". But I will
      note that https://github.com/openssl/openssl/pull/4669
      
       suggests binutils
      has also changed behavior around this before.
      
      Reviewed-by: default avatarAndy Polyakov <appro@openssl.org>
      Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
      (Merged from https://github.com/openssl/openssl/pull/5431)
      
      (cherry picked from commit 8a5d8bc4)
      fa9ab9ee
  15. Feb 26, 2018
    • Dr. Matthias St. Pierre's avatar
      bio_b64.c: prevent base64 filter BIO from decoding out-of-bound data · 5eb9a426
      Dr. Matthias St. Pierre authored
      Fixes #5405, #1381
      
      The base64 filter BIO reads its input in chunks of B64_BLOCK_SIZE bytes.
      When processing input in PEM format it can happen in rare cases that
      
      - the trailing PEM marker crosses the boundary of a chunk, and
      - the beginning of the following chunk contains valid base64 encoded data.
      
      This happened in issue #5405, where the PEM marker was split into
      "-----END CER" and "TIFICATE-----" at the end of the first chunk.
      
      The decoding of the first chunk terminated correctly at the '-' character,
      which is treated as an EOF marker, and b64_read() returned. However,
      when called the second time, b64_read() read the next chunk and interpreted
      the string "TIFICATE" as valid base64 encoded data, adding 6 extra bytes
      '4c 81 48 08 04 c4'.
      
      This patch restores the assignment of the error code to 'ctx->cont', which
      was deleted accidentally in commit 5562cfac
      
       and which prevents b64_read()
      from reading additional data on subsequent calls.
      
      This issue was observed and reported by Annie Yousar.
      
      Reviewed-by: default avatarRichard Levitte <levitte@openssl.org>
      (Merged from https://github.com/openssl/openssl/pull/5422)
      5eb9a426
    • Andy Polyakov's avatar
      mem_sec.c: relax POSIX requirement. · 4974a6f2
      Andy Polyakov authored
      
      
      Even though mlock(2) was standardized in POSIX.1-2001, vendors did
      implement it prior that point.
      
      Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
      (Merged from https://github.com/openssl/openssl/pull/5460)
      
      (cherry picked from commit 5839185c)
      4974a6f2
  16. Feb 24, 2018
  17. Feb 23, 2018