[Bug dynamic-link/14293] New: dlopen with non-existing RUNPATH causes double free

[Bug dynamic-link/14293] New: dlopen with non-existing RUNPATH causes double free

[joamaki at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14293

             Bug #: 14293
           Summary: dlopen with non-existing RUNPATH causes double free
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dynamic-link
        AssignedTo: unassigned@sourceware.org
        ReportedBy: joamaki@gmail.com
    Classification: Unclassified


Created attachment 6479
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6479
Backtrace for test program

When calling dlopen with an executable with RUNPATH section
pointing to a non-existing path and LD_LIBRARY_PATH pointing to /lib
the application crashes due to a double free in open_path (elf/dl-load.c).

This was actually causing a production application to crash due to
some silly sod setting the LD_LIBRARY_PATH to /lib in startup scripts :-).

Attached is a backtrace for the following test program:
--
#include <dlfcn.h>

/**
 * gcc dlopen_bug.c -o dlopen_bug -ldl -Wl,-rpath,/nonexisting_path
-Wl,--enable-new-dtags -g
 *
 * Run with:
 * LD_LIBRARY_PATH=/lib ./dlopen_bug
 * 
 * Replace /lib with path to directory containing ld.so,
 * e.g. /lib/x86_64-linux-gnu on Debian/Ubuntu.
 */

int main()
{
    dlopen("nonexisting.so", RTLD_LAZY);
}
--

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[Bug dynamic-link/14293] dlopen with non-existing RUNPATH causes double free

[aj at suse dot de]

http://sourceware.org/bugzilla/show_bug.cgi?id=14293

Andreas Jaeger <aj at suse dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #6479|application/octet-stream    |text/plain
          mime type|                            |

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[Bug dynamic-link/14293] dlopen with non-existing RUNPATH causes double free

[schwab@linux-m68k.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=14293

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |2.18

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2013-04-11 07:24:14 UTC ---
Fixed by 273cdee86d86e107c0eecef5614f57e37567b54e

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[Bug dynamic-link/14293] dlopen with non-existing RUNPATH causes double free

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=14293

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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