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Client Interface: manage arguments number overflow

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Signed-off-by: Laurent Vivier <Laurent@vivier.eu>


git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@598 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Laurent Vivier
2009-11-06 21:59:24 +00:00
parent 0dd8e42f39
commit 1eb7d7b54a
1 changed files with 4 additions and 2 deletions
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6
modules/client.c
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@@ -29,11 +29,12 @@
* (it doesn't) or if the function is unimplemented.
*/
#define PROM_MAX_ARGS 10
typedef struct prom_args {
const char *service;
long nargs;
long nret;
ulong args[10]; /* MAX NUM ARGS! */
ulong args[PROM_MAX_ARGS];
} prom_args_t;
#ifdef DEBUG_CIF
@@ -258,7 +259,8 @@ of_client_interface( int *params )
prom_args_t *pb = (prom_args_t*)params;
int val, i, dstacksave;
if( pb->nargs < 0 || pb->nret < 0 )
if( pb->nargs < 0 || pb->nret < 0 ||
pb->nargs + pb->nret > PROM_MAX_ARGS)
return -1;
#ifdef DEBUG_CIF
dump_service(pb);