[Mesa-dev] [PATCH] gallium/hud: avoid buffer overrun

Marek Olšák maraeo at gmail.com
Mon Jan 16 17:09:24 UTC 2017


Pushed, thanks.

Marek

On Sun, Jan 15, 2017 at 12:28 AM, Thomas Hindoe Paaboel Andersen
<phomes at gmail.com> wrote:
> Renaming data sources was added in
> e8bb97ce30051b999a4a69c9b27884daeb8d71e6
> It was possible to use a new name longer than
> the name array in hud_graph of 128. This
> patch truncates the name to fit the array.
>
> CC: Marek Olšák <marek.olsak at amd.com>
> ---
>  src/gallium/auxiliary/hud/hud_context.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/src/gallium/auxiliary/hud/hud_context.c b/src/gallium/auxiliary/hud/hud_context.c
> index 7fa62a9..87070d2 100644
> --- a/src/gallium/auxiliary/hud/hud_context.c
> +++ b/src/gallium/auxiliary/hud/hud_context.c
> @@ -1265,8 +1265,10 @@ hud_parse_env_var(struct hud_context *hud, const char *env)
>
>           strip_hyphens(s);
>           if (!LIST_IS_EMPTY(&pane->graph_list)) {
> -            strcpy(LIST_ENTRY(struct hud_graph,
> -                              pane->graph_list.prev, head)->name, s);
> +            struct hud_graph *graph;
> +            graph = LIST_ENTRY(struct hud_graph, pane->graph_list.prev, head);
> +            strncpy(graph->name, s, sizeof(graph->name)-1);
> +            graph->name[sizeof(graph->name)-1] = 0;
>           }
>        }
>
> --
> 2.9.3
>
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