[Bug dynamic-link/14839] New: Access behind terminating nullbyte of the environment?

[jannhorn at googlemail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14839

             Bug #: 14839
           Summary: Access behind terminating nullbyte of the environment?
           Product: glibc
           Version: 2.13
            Status: NEW
          Severity: minor
          Priority: P2
         Component: dynamic-link
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jannhorn@googlemail.com
    Classification: Unclassified


>From rtld.c:

    case 10:
      /* Mask for the important hardware capabilities.  */
      if (memcmp (envline, "HWCAP_MASK", 10) == 0)
        GLRO(dl_hwcap_mask) = __strtoul_internal (&envline[11], NULL,
                              0, 0);

As far as I can see, there is no check that makes sure that the tenth byte
isn't already the terminating nullbyte.

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