global-buffer-overflow in /radare2/libr/arch/p/nds32/nds32-dis.h:993:6 in print_insn32_fpu

[gandalf4a]

Version

$ r2  -v
radare2 5.8.9 31339 @ linux-x86-64
birth: git.5.8.8-691-gb2de2288d8 2023-10-17__01:18:28
commit: b2de2288d8299f89288c503fc2ce22381b61aba0

Platform

$ uname -a
Linux user-GE40-2PC-Dragon-Eyes 6.2.0-33-generic #33~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep  7 10:33:52 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

Asan

[35mWARN:[0m Relocs has not been applied. Please use `-e bin.relocs.apply=true` or `-e bin.cache=true` next time
[33mINFO:[0m Analyze all flags starting with sym. and entry0 (aa)
[33mINFO:[0m Analyze imports (af@@@i)
[35mWARN:[0m set your favourite calling convention in `e anal.cc=?`
[33mINFO:[0m Analyze symbols (af@@@s)
[33mINFO:[0m Recovering variables
[33mINFO:[0m Analyze all functions arguments/locals (afva@@@F)
[2K
[33mINFO:[0m Analyze function calls (aac)
=================================================================
==3834464==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7f0145244288 at pc 0x7f01442680a9 bp 0x7fff92e713a0 sp 0x7fff92e71398
READ of size 8 at 0x7f0145244288 thread T0
    #0 0x7f01442680a8 in print_insn32_fpu /home/user/fuzzing_radare2/radare2/libr/arch/p/nds32/nds32-dis.h:993:6
    #1 0x7f0144261c25 in print_insn32 /home/user/fuzzing_radare2/radare2/libr/arch/p/nds32/nds32-dis.h:1246:7
    #2 0x7f0144261c25 in print_insn_nds32 /home/user/fuzzing_radare2/radare2/libr/arch/p/nds32/nds32-dis.h:1276:3
    #3 0x7f0144265882 in decode /home/user/fuzzing_radare2/radare2/libr/arch/p/nds32/plugin.c:135:13
    #4 0x7f0143d62c85 in r_arch_decode /home/user/fuzzing_radare2/radare2/libr/arch/arch.c:320:9
    #5 0x7f01422629cf in r_anal_op /home/user/fuzzing_radare2/radare2/libr/anal/op.c:186:8
    #6 0x7f01460330ad in _anal_calls /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:9005:7
    #7 0x7f0146030630 in cmd_anal_calls /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:9125:5
    #8 0x7f0146022fc2 in cmd_anal_all /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:12982:11
    #9 0x7f0145f37429 in cmd_anal /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:14267:8
    #10 0x7f0147292940 in perform_analysis /home/user/fuzzing_radare2/radare2/libr/main/radare2.c:499:2
    #11 0x7f014728831d in r_main_radare2 /home/user/fuzzing_radare2/radare2/libr/main/radare2.c:1720:4
    #12 0x55727ae3552d in main /home/user/fuzzing_radare2/radare2/binr/radare2/radare2.c:114:9
    #13 0x7f0146829d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #14 0x7f0146829e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #15 0x55727ad77444 in _start (/home/user/fuzzing_radare2/radare2/binr/radare2/radare2+0x1f444) (BuildId: 655cd64f4959101bcf192e77bc6bf062577e0708)

0x7f0145244288 is located 24 bytes to the left of global variable 'mnemonic_fd2_cmp' defined in 'p/nds32/nds32-dis.h:155:20' (0x7f01452442a0) of size 64
0x7f0145244288 is located 8 bytes to the right of global variable 'mnemonic_fs2_cmp' defined in 'p/nds32/nds32-dis.h:149:20' (0x7f0145244240) of size 64
SUMMARY: AddressSanitizer: global-buffer-overflow /home/user/fuzzing_radare2/radare2/libr/arch/p/nds32/nds32-dis.h:993:6 in print_insn32_fpu
Shadow bytes around the buggy address:
  0x0fe0a8a40800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40810: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40820: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40830: 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9
  0x0fe0a8a40840: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
=>0x0fe0a8a40850: f9[f9]f9 f9 00 00 00 00 00 00 00 00 f9 f9 f9 f9
  0x0fe0a8a40860: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40870: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a40890: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe0a8a408a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==3834464==ABORTING

Reproduce

r2 -A -q poc

POC File

https://github.com/gandalf4a/crash_report/blob/main/radare2/r2/gbo_993

Credit

Gandalf4a