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fuzzers: limit input size to 100KiB #16505

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Merged
kasper93 merged 1 commit into from
Jul 5, 2025
Merged

fuzzers: limit input size to 100KiB #16505

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2 changes: 2 additions & 0 deletions fuzzers/common.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@

#include <mpv/client.h>

#define MAX_FUZZ_SIZE (100 << 10) // 100 KiB

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);

#define MPV_STRINGIFY_(X) #X
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3 changes: 3 additions & 0 deletions fuzzers/fuzzer_json.c
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Expand Up @@ -22,6 +22,9 @@

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > MAX_FUZZ_SIZE)
return 0;

void *tmp = talloc_new(NULL);
char *s = talloc_array_ptrtype(tmp, s, size + 1);
memcpy(s, data, size);
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3 changes: 3 additions & 0 deletions fuzzers/fuzzer_load.c
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Expand Up @@ -27,6 +27,9 @@

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > MAX_FUZZ_SIZE)
return 0;

#ifdef MPV_LOAD_CONFIG_FILE
// config file size limit, see m_config_parse_config_file()
if (size > 1000000000)
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3 changes: 3 additions & 0 deletions fuzzers/fuzzer_loadfile_direct.c
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Expand Up @@ -24,6 +24,9 @@

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > MAX_FUZZ_SIZE)
return 0;

if (size <= 1 || data[size - 1] != '\0')
return 0;

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3 changes: 3 additions & 0 deletions fuzzers/fuzzer_set_property.c
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Expand Up @@ -19,6 +19,9 @@

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > MAX_FUZZ_SIZE)
return 0;

size_t value_len;
switch (MPV_FORMAT)
{
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