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Fix a NULL dereference

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Access to field 'zone' results in a dereference of a null pointer (loaded from variable 'prev_preset'), if `size` is negative. Problem is: Parameter `size` is `chunk.size` and should be unsigned.
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derselbst 2020-09-11 21:45:03 +02:00 committed by Tom M
parent ec74ed905b
commit c4cd8bfc24
1 changed files with 4 additions and 3 deletions
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7
src/sfloader/fluid_sffile.c
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@ -300,7 +300,7 @@ static int load_body(SFData *sf);
static int process_info(SFData *sf, int size); static int process_info(SFData *sf, int size);
static int process_sdta(SFData *sf, unsigned int size); static int process_sdta(SFData *sf, unsigned int size);
static int process_pdta(SFData *sf, int size); static int process_pdta(SFData *sf, int size);
static int load_phdr(SFData *sf, int size); static int load_phdr(SFData *sf, unsigned int size);
static int load_pbag(SFData *sf, int size); static int load_pbag(SFData *sf, int size);
static int load_pmod(SFData *sf, int size); static int load_pmod(SFData *sf, int size);
static int load_pgen(SFData *sf, int size); static int load_pgen(SFData *sf, int size);
@ -1047,9 +1047,10 @@ static int process_pdta(SFData *sf, int size)
} }
/* preset header loader */ /* preset header loader */
static int load_phdr(SFData *sf, int size) static int load_phdr(SFData *sf, unsigned int size)
{ {
int i, i2; unsigned int i;
int i2;
SFPreset *preset, *prev_preset = NULL; SFPreset *preset, *prev_preset = NULL;
unsigned short pbag_idx, prev_pbag_idx = 0; unsigned short pbag_idx, prev_pbag_idx = 0;