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tests/qtest: Replace g_memdup() by g_memdup2()

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Per https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538

  The old API took the size of the memory to duplicate as a guint,
  whereas most memory functions take memory sizes as a gsize. This
  made it easy to accidentally pass a gsize to g_memdup(). For large
  values, that would lead to a silent truncation of the size from 64
  to 32 bits, and result in a heap area being returned which is
  significantly smaller than what the caller expects. This can likely
  be exploited in various modules to cause a heap buffer overflow.

Replace g_memdup() by the safer g_memdup2() wrapper.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210903174510.751630-25-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Philippe Mathieu-Daudé 2021-09-03 19:45:06 +02:00 • committed by Laurent Vivier
parent 2c674fada7
commit 460056dbe6
2 changed files with 4 additions and 4 deletions
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2
tests/qtest/libqos/qgraph.c
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@ -93,7 +93,7 @@ static void add_edge(const char *source, const char *dest,
edge->type = type;
edge->dest = g_strdup(dest);
edge->edge_name = g_strdup(opts->edge_name ?: dest);
edge->arg = g_memdup(opts->arg, opts->size_arg);
edge->arg = g_memdup2(opts->arg, opts->size_arg);
edge->before_cmd_line =
opts->before_cmd_line ? g_strconcat(" ", opts->before_cmd_line, NULL) : NULL;