dlmopen glib2.0 crashed in g_variant_lookup_value

Bug #1763591 reported by bin on 2018-04-13
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
glib2.0 (Ubuntu)
Low
Unassigned

Bug Description

when dlmopen glib2.0 and the program is linked with pthread, glib2.0 crashed in g_variant_lookup_value when dlmopen with
LM_ID_NEWLM

following is the poc:

#define _GNU_SOURCE
#include <dlfcn.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char*argv[])
{
  char buf[4096] = {0};
  pthread_attr_t attr;

  pthread_attr_init(&attr);
  snprintf(buf, sizeof(buf), "/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2");
  dlmopen(-1, buf, RTLD_NOW|RTLD_LOCAL);
  return 0;
}

Sebastien Bacher (seb128) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software on https://gitlab.gnome.org/GNOME/glib/issues/

Changed in glib2.0 (Ubuntu):
importance: Undecided → Low
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