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Merge pull request #270 from practicalswift/invalid-write-in-cpu_tb_exec_x86_64

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Crash case: Invalid write of size 4 in cpu_tb_exec_x86_64 (issue #269)
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Nguyen Anh Quynh 2015-11-17 10:05:10 +08:00
commit 51945c5bf2
3 changed files with 28 additions and 0 deletions
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1
.gitignore vendored
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@ -112,6 +112,7 @@ eflags_nosync
eflags_noset
mem_map_large
invalid_read_in_cpu_tb_exec
invalid_read_in_cpu_tb_exec_x86_64
#################

1
tests/regress/Makefile
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@ -17,6 +17,7 @@ TESTS += 00opcode_uc_crash
TESTS += eflags_noset
TESTS += mem_map_large
TESTS += invalid_read_in_cpu_tb_exec
TESTS += invalid_read_in_cpu_tb_exec_x86_64
all: $(TESTS)

26
tests/regress/invalid_read_in_cpu_tb_exec_x86_64.c Normal file
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@ -0,0 +1,26 @@
#include <unicorn/unicorn.h>
/*
* Disassembly according to capstone:
* mulx rsp, rsp, rdx
*/
#define BINARY "\xc4\xe2\xdb\xf6\xe2"
#define MEMORY_SIZE 2 * 1024 * 1024
#define STARTING_ADDRESS 0x1000000
int main(int argc, char **argv, char **envp) {
uc_engine *uc;
if (uc_open(UC_ARCH_X86, UC_MODE_64, &uc)) {
printf("uc_open(…) failed\n");
return 1;
}
uc_mem_map(uc, STARTING_ADDRESS, MEMORY_SIZE, UC_PROT_ALL);
if (uc_mem_write(uc, STARTING_ADDRESS, BINARY, sizeof(BINARY) - 1)) {
printf("uc_mem_write(…) failed\n");
return 1;
}
printf("uc_emu_start(…)\n");
uc_emu_start(uc, STARTING_ADDRESS, STARTING_ADDRESS + sizeof(BINARY) - 1, 0, 20);
printf("done\n");
return 0;
}