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  1. MariaDB Server
  2. MDEV-4505

Buffer overrun when processing --log-bin parameter without file name

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.0.2, 5.5.30
    • Fix Version/s: 10.0.3, 5.5.31
    • Component/s: None
    • Labels:
      None

      Description

      sql/mysqld.cc:4564:

          if (opt_bin_logname && 
              opt_bin_logname[strlen(opt_bin_logname) - 1] == FN_LIBCHAR)

      But when I pass --log-bin without filename the opt_bin_logname is actually an empty string and then the statement accesses invalid memory address. These same code lines work fine on MySQL 5.1, so apparently at some point opt_bin_logname was changed to have empty string instead of NULL.

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            • Assignee:
              serg Sergei Golubchik
              Reporter:
              pivanof Pavel Ivanov
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              Dates

              • Created:
                Updated:
                Resolved: