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Limit binutils fuzzing input size #14965

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Merged
DavidKorczynski merged 1 commit into from
Feb 18, 2026
Merged

Limit binutils fuzzing input size #14965

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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_addr2line.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_as.c
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,8 @@ xatexit (void (*fn) (void) ATTRIBUTE_UNUSED)

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (size > 1024)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer-%d.s", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_bfd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,8 @@ static int bufferToFile(char * name, const uint8_t *Data, size_t Size) {
char *target = NULL;

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size > 16384)
return 0;
char tmpfilename[32];

if (bfd_init() != BFD_INIT_MAGIC)
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_bfd_ext.c
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,8 @@ static int bufferToFile(char *name, const uint8_t *Data, size_t Size) {
}

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size > 16384)
return 0;
char tmpfilename[32];

if (bfd_init() != BFD_INIT_MAGIC)
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3 changes: 1 addition & 2 deletions projects/binutils/fuzz_dlltool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -60,9 +60,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size < 512) {
if (size < 512 || size > 16384)
return 0;
}

/* def file */
char filename[256];
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_dwarf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_nm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_objcopy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,8 @@ init_objcopy_global_state() {
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_objdump.c
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_ranlib_simulation.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_readelf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,8 @@ int check_architecture(char *tmpfilename, char *arch_string) {

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());

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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_strings.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
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2 changes: 2 additions & 0 deletions projects/binutils/fuzz_windres.c
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size > 16384)
return 0;
enum res_format input_format;
input_format = fuzz_format_check_from_mem(data, size);;
if (input_format != RES_FORMAT_COFF) {
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