A stack overflow vulnerability exists in gpac 1.1.0 via the gf_bifs_dec_proto_list function, which causes a segmentation fault and application crash.
cpe:2.3:a:gpac:gpac:1.1.0:dev:*:*:*:*:*:*
A713E8C4-E079-4ECB-AF9C-DC0EC80D089D
OR
Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [x] I looked for a similar issue and couldn't find any.
- [x] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

A stack overflow was discovered in gf_bifs_dec_proto_list(). The vulnerability causes a segmentation fault and application crash.

**Version:**

```
MP4Box - GPAC version 1.1.0-DEV-revUNKNOWN_REV
(c) 2000-2021 Telecom Paris distributed under LGPL v2.1+ - http://gpac.io

Please cite our work in your research:
        GPAC Filters: https://doi.org/10.1145/3339825.3394929
        GPAC: https://doi.org/10.1145/1291233.1291452

GPAC Configuration:
Features: GPAC_CONFIG_LINUX GPAC_64_BITS GPAC_HAS_IPV6 GPAC_HAS_SOCK_UN GPAC_MINIMAL_ODF GPAC_HAS_QJS GPAC_HAS_JPEG GPAC_HAS_PNG GPAC_HAS_LINUX_DVB  GPAC_DISABLE_3D
```
**System information**
Ubuntu 20.04 focal, AMD EPYC 7742 64-Core @ 16x 2.25GHz

**command:**

```
./MP4Box -lsr poc_8
```
[poc_8.zip](https://github.com/gpac/gpac/files/7693778/poc_8.zip)

**Result**

```
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type stbk in parent minf
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample table !
[iso file] Track with no sample description box !
[iso file] Unknown box type 80rak in parent moov
[iso file] Incomplete box mdat - start 11495 size 832544
[iso file] Incomplete file while reading for dump - aborting parsing
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type stbk in parent minf
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample table !
[iso file] Track with no sample description box !
[iso file] Unknown box type 80rak in parent moov
[iso file] Incomplete box mdat - start 11495 size 832544
[iso file] Incomplete file while reading for dump - aborting parsing
MPEG-4 BIFS Scene Parsing
*** stack smashing detected ***: terminated
[1]    3737450 abort      ./MP4Box -lsr ./poc/poc_8
```

**gdb**

```
*** stack smashing detected ***: terminated

Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x0
*RBX  0x7ffff72bf040 ◂— 0x7ffff72bf040
*RCX  0x7ffff758218b (raise+203) ◂— mov    rax, qword ptr [rsp + 0x108]
 RDX  0x0
*RDI  0x2
*RSI  0x7fffffff68a0 ◂— 0x0
*R8   0x0
*R9   0x7fffffff68a0 ◂— 0x0
*R10  0x8
*R11  0x246
*R12  0x7fffffff6b20 ◂— 0x0
*R13  0x20
*R14  0x7ffff7ffb000 ◂— 0x202a2a2a00001000
*R15  0x1
*RBP  0x7fffffff6c20 —▸ 0x7ffff76f607c ◂— '*** %s ***: terminated\n'
*RSP  0x7fffffff68a0 ◂— 0x0
*RIP  0x7ffff758218b (raise+203) ◂— mov    rax, qword ptr [rsp + 0x108]
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
 ► 0x7ffff758218b <raise+203>    mov    rax, qword ptr [rsp + 0x108]
   0x7ffff7582193 <raise+211>    xor    rax, qword ptr fs:[0x28]
   0x7ffff758219c <raise+220>    jne    raise+260                <raise+260>
    ↓
   0x7ffff75821c4 <raise+260>    call   __stack_chk_fail                <__stack_chk_fail>

   0x7ffff75821c9                nop    dword ptr [rax]
   0x7ffff75821d0 <killpg>       endbr64
   0x7ffff75821d4 <killpg+4>     test   edi, edi
   0x7ffff75821d6 <killpg+6>     js     killpg+16                <killpg+16>

   0x7ffff75821d8 <killpg+8>     neg    edi
   0x7ffff75821da <killpg+10>    jmp    kill                <kill>

   0x7ffff75821df <killpg+15>    nop
──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsi r9 rsp 0x7fffffff68a0 ◂— 0x0
01:0008│            0x7fffffff68a8 —▸ 0x7ffff7546278 ◂— 0x10001200005bb2
02:0010│            0x7fffffff68b0 —▸ 0x7fffffff6c40 —▸ 0x5555555df3b0 ◂— 0x6b6
03:0018│            0x7fffffff68b8 —▸ 0x7ffff7fe7c2e ◂— mov    r11, rax
04:0020│            0x7fffffff68c0 ◂— 0xcd2709f17adf5bb6
05:0028│            0x7fffffff68c8 ◂— 0x0
06:0030│            0x7fffffff68d0 ◂— 0x7
07:0038│            0x7fffffff68d8 ◂— 0x1
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0   0x7ffff758218b raise+203
   f 1   0x7ffff7561859 abort+299
   f 2   0x7ffff75cc3ee __libc_message+670
   f 3   0x7ffff766eb4a __fortify_fail+42
   f 4   0x7ffff766eb16
   f 5   0x7ffff79064bc gf_bifs_dec_proto_list+2012
   f 6 0xb6b6b6b6b6b6b6b6
   f 7 0xb6b6b6b6b6b6b6b6
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg> bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007ffff7561859 in __GI_abort () at abort.c:79
#2  0x00007ffff75cc3ee in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff76f607c "*** %s ***: terminated\n") at ../sysdeps/posix/libc_fatal.c:155
#3  0x00007ffff766eb4a in __GI___fortify_fail (msg=msg@entry=0x7ffff76f6064 "stack smashing detected") at fortify_fail.c:26
#4  0x00007ffff766eb16 in __stack_chk_fail () at stack_chk_fail.c:24
#5  0x00007ffff79064bc in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#6  0xb6b6b6b6b6b6b6b6 in ?? ()
#7  0xb6b6b6b6b6b6b6b6 in ?? ()
#8  0xb6b6b6b6b6b6b6b6 in ?? ()
#9  0xb6b6b6b6b6b6b6b6 in ?? ()
#10 0xb6b6b6b6b6b6b6b6 in ?? ()
#11 0xb6b6b6b6b6b6b6b6 in ?? ()
#12 0xb6b6b6b6b6b6b6b6 in ?? ()
#13 0xb6b6b6b6b6b6b6b6 in ?? ()
#14 0xb6b6b6b6b6b6b6b6 in ?? ()
#15 0xb6b6b6b6b6b6b6b6 in ?? ()
#16 0xb6b6b6b6b6b6b6b6 in ?? ()
#17 0xb6b6b6b6b6b6b6b6 in ?? ()
#18 0xb6b6b6b6b6b6b6b6 in ?? ()
#19 0xb6b6b6b6b6b6b6b6 in ?? ()
#20 0xb6b6b6b6b6b6b6b6 in ?? ()
#21 0xb6b6b6b6b6b6b6b6 in ?? ()
#22 0xb6b6b6b6b6b6b6b6 in ?? ()
#23 0xb6b6b6b6b6b6b6b6 in ?? ()
#24 0xb6b6b6b6b6b6b6b6 in ?? ()
#25 0xb6b6b6b6b6b6b6b6 in ?? ()
#26 0xb6b6b6b6b6b6b6b6 in ?? ()
#27 0xb6b6b6b6b6b6b6b6 in ?? ()
#28 0xb6b6b6b6b6b6b6b6 in ?? ()
#29 0xb6b6b6b6b6b6b6b6 in ?? ()
#30 0xb6b6b6b6b6b6b6b6 in ?? ()
#31 0xb6b6b6b6b6b6b6b6 in ?? ()
#32 0xb6b6b6b6b6b6b6b6 in ?? ()
#33 0xb6b6b6b6b6b6b6b6 in ?? ()
#34 0xb6b6b6b6b6b6b6b6 in ?? ()
#35 0xb6b6b6b6b6b6b6b6 in ?? ()
#36 0xb6b6b6b6b6b6b6b6 in ?? ()
#37 0xb6b6b6b6b6b6b6b6 in ?? ()
#38 0xb6b6b6b6b6b6b6b6 in ?? ()
#39 0xb6b6b6b6b6b6b6b6 in ?? ()
#40 0xb6b6b6b6b6b6b6b6 in ?? ()
#41 0xb6b6b6b6b6b6b6b6 in ?? ()
#42 0xb6b6b6b6b6b6b6b6 in ?? ()
#43 0xb6b6b6b6b6b6b6b6 in ?? ()
#44 0xb6b6b6b6b6b6b6b6 in ?? ()
#45 0xb6b6b6b6b6b6b6b6 in ?? ()
#46 0xb6b6b6b6b6b6b6b6 in ?? ()
#47 0xb6b6b6b6b6b6b6b6 in ?? ()
#48 0xb6b6b6b6b6b6b6b6 in ?? ()
#49 0xb6b6b6b6b6b6b6b6 in ?? ()
#50 0xb6b6b6b6b6b6b6b6 in ?? ()
#51 0xb6b6b6b6b6b6b6b6 in ?? ()
#52 0xb6b6b6b6b6b6b6b6 in ?? ()
#53 0xb6b6b6b6b6b6b6b6 in ?? ()
#54 0xb6b6b6b6b6b6b6b6 in ?? ()
#55 0xb6b6b6b6b6b6b6b6 in ?? ()
#56 0xb6b6b6b6b6b6b6b6 in ?? ()
#57 0xb6b6b6b6b6b6b6b6 in ?? ()
#58 0xb6b6b6b6b6b6b6b6 in ?? ()
#59 0xb6b6b6b6b6b6b6b6 in ?? ()
#60 0xb6b6b6b6b6b6b6b6 in ?? ()
#61 0xb6b6b6b6b6b6b6b6 in ?? ()
#62 0xb6b6b6b6b6b6b6b6 in ?? ()
#63 0xb6b6b6b6b6b6b6b6 in ?? ()
#64 0xb6b6b6b6b6b6b6b6 in ?? ()
#65 0xb6b6b6b6b6b6b6b6 in ?? ()
#66 0xb6b6b6b6b6b6b6b6 in ?? ()
#67 0xb6b6b6b6b6b6b6b6 in ?? ()
#68 0xb6b6b6b6b6b6b6b6 in ?? ()
#69 0xb6b6b6b6b6b6b6b6 in ?? ()
#70 0xb6b6b6b6b6b6b6b6 in ?? ()
#71 0xb6b6b6b6b6b6b6b6 in ?? ()
#72 0xb6b6b6b6b6b6b6b6 in ?? ()
#73 0xb6b6b6b6b6b6b6b6 in ?? ()
#74 0xb6b6b6b6b6b6b6b6 in ?? ()
#75 0xb6b6b6b6b6b6b6b6 in ?? ()
#76 0xb6b6b6b6b6b6b6b6 in ?? ()
#77 0xb6b6b6b6b6b6b6b6 in ?? ()
#78 0xb6b6b6b6b6b6b6b6 in ?? ()
#79 0xb6b6b6b6b6b6b6b6 in ?? ()
#80 0xb6b6b6b6b6b6b6b6 in ?? ()
#81 0xb6b6b6b6b6b6b6b6 in ?? ()
#82 0xb6b6b6b6b6b6b6b6 in ?? ()
#83 0xb6b6b6b6b6b6b6b6 in ?? ()
#84 0xb6b6b6b6b6b6b6b6 in ?? ()
#85 0xb6b6b6b6b6b6b6b6 in ?? ()
#86 0xb6b6b6b6b6b6b6b6 in ?? ()
#87 0xb6b6b6b6b6b6b6b6 in ?? ()
#88 0xb6b6b6b6b6b6b6b6 in ?? ()
#89 0xb6b6b6b6b6b6b6b6 in ?? ()
#90 0xb6b6b6b6b6b6b6b6 in ?? ()
#91 0xb6b6b6b6b6b6b6b6 in ?? ()
#92 0xb6b6b6b6b6b6b6b6 in ?? ()
#93 0xb6b6b6b6b6b6b6b6 in ?? ()
#94 0xb6b6b6b6b6b6b6b6 in ?? ()
#95 0xb6b6b6b6b6b6b6b6 in ?? ()
#96 0xb6b6b6b6b6b6b6b6 in ?? ()
#97 0xb6b6b6b6b6b6b6b6 in ?? ()
#98 0x000080b6b6b6b6b6 in ?? ()
#99 0x0000000000000002 in ?? ()
#100 0x0000000000000044 in ?? ()
#101 0x0000000000000008 in ?? ()
#102 0x00005555555c7e60 in ?? ()
#103 0x00005555555cf500 in ?? ()
#104 0x0000000000000000 in ?? ()
```

`break gf_bifs_dec_proto_list`

```
Breakpoint 1, 0x00007ffff7905ce0 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
──────────────────────────────────[ REGISTERS ]───────────────────────────────────
 RAX  0x1
 RBX  0x5555555d23b0 ◂— 0x0
 RCX  0x710
 RDX  0x5555555df2f0 ◂— 0x0
 RDI  0x5555555de660 ◂— 0x0
 RSI  0x5555555d23b0 ◂— 0x0
 R8   0x0
 R9   0x0
 R10  0x7ffff775bc80 ◂— 'gf_sg_command_new'
 R11  0x7ffff7727be0 (main_arena+96) —▸ 0x5555555df320 ◂— 0x0
 R12  0x5555555df2f0 ◂— 0x0
 R13  0x5555555df1d0 ◂— 0x0
 R14  0x5555555d42a0 ◂— 0x0
 R15  0x0
 RBP  0x5555555de660 ◂— 0x0
 RSP  0x7fffffff7168 —▸ 0x7ffff7906559 (BD_DecSceneReplace+73) ◂— mov    r12d, eax
 RIP  0x7ffff7905ce0 (gf_bifs_dec_proto_list) ◂— endbr64
────────────────────────────────────[ DISASM ]────────────────────────────────────
 ► 0x7ffff7905ce0 <gf_bifs_dec_proto_list>       endbr64
   0x7ffff7905ce4 <gf_bifs_dec_proto_list+4>     push   r15
   0x7ffff7905ce6 <gf_bifs_dec_proto_list+6>     push   r14
   0x7ffff7905ce8 <gf_bifs_dec_proto_list+8>     push   r13
   0x7ffff7905cea <gf_bifs_dec_proto_list+10>    mov    r13, rsi
   0x7ffff7905ced <gf_bifs_dec_proto_list+13>    mov    esi, 1
   0x7ffff7905cf2 <gf_bifs_dec_proto_list+18>    push   r12
   0x7ffff7905cf4 <gf_bifs_dec_proto_list+20>    push   rbp
   0x7ffff7905cf5 <gf_bifs_dec_proto_list+21>    push   rbx
   0x7ffff7905cf6 <gf_bifs_dec_proto_list+22>    sub    rsp, 0x488
   0x7ffff7905cfd <gf_bifs_dec_proto_list+29>    mov    rax, qword ptr [rdi + 0x50]
────────────────────────────────────[ STACK ]─────────────────────────────────────
00:0000│ rsp 0x7fffffff7168 —▸ 0x7ffff7906559 (BD_DecSceneReplace+73) ◂— mov    r12d, eax
01:0008│     0x7fffffff7170 —▸ 0x5555555de660 ◂— 0x0
02:0010│     0x7fffffff7178 —▸ 0x5555555df250 —▸ 0x5555555d4030 ◂— 0x0
03:0018│     0x7fffffff7180 —▸ 0x5555555d23b0 ◂— 0x0
04:0020│     0x7fffffff7188 —▸ 0x5555555df1d0 ◂— 0x0
05:0028│     0x7fffffff7190 —▸ 0x5555555d42a0 ◂— 0x0
06:0030│     0x7fffffff7198 —▸ 0x7ffff7914e5e (BM_SceneReplace+110) ◂— mov    rsi,
 rbp
07:0038│     0x7fffffff71a0 —▸ 0x5555555dea00 —▸ 0x5555555df1f0 —▸ 0x5555555df1a0 ◂— 0x0
──────────────────────────────────[ BACKTRACE ]───────────────────────────────────
 ► f 0   0x7ffff7905ce0 gf_bifs_dec_proto_list
   f 1   0x7ffff7906559 BD_DecSceneReplace+73
   f 2   0x7ffff7914e5e BM_SceneReplace+110
   f 3   0x7ffff7915023 BM_ParseCommand+179
   f 4   0x7ffff7915353 gf_bifs_decode_command_list+163
   f 5   0x7ffff7aa1d91 gf_sm_load_run_isom+1217
   f 6   0x5555555844a8 dump_isom_scene+760
   f 7   0x55555557b42c mp4boxMain+9228
──────────────────────────────────────────────────────────────────────────────────
pwndbg> c
Continuing.

Breakpoint 1, 0x00007ffff7905ce0 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
──────────────────────────────────[ REGISTERS ]───────────────────────────────────
*RAX  0x0
*RBX  0x5555555df330 ◂— 0x6b6
*RCX  0x5555555dfdf0 ◂— 0x0
*RDX  0x0
 RDI  0x5555555de660 ◂— 0xfffffffd
 RSI  0x5555555d23b0 ◂— 0x0
*R8   0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
*R9   0x7c
*R10  0x7ffff775bf0a ◂— 'gf_sg_proto_get_graph'
*R11  0x7ffff788b850 (gf_sg_proto_get_graph) ◂— endbr64
*R12  0x5555555de660 ◂— 0xfffffffd
*R13  0x5555555d23b0 ◂— 0x0
 R14  0x5555555d42a0 ◂— 0x0
*R15  0x7fffffff6d40 ◂— 0xb6b6b6b6b6b6b6b6
*RBP  0x6b6
*RSP  0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov    dword ptr [rsp + 0x14], eax
 RIP  0x7ffff7905ce0 (gf_bifs_dec_proto_list) ◂— endbr64
────────────────────────────────────[ DISASM ]────────────────────────────────────
 ► 0x7ffff7905ce0 <gf_bifs_dec_proto_list>       endbr64
   0x7ffff7905ce4 <gf_bifs_dec_proto_list+4>     push   r15
   0x7ffff7905ce6 <gf_bifs_dec_proto_list+6>     push   r14
   0x7ffff7905ce8 <gf_bifs_dec_proto_list+8>     push   r13
   0x7ffff7905cea <gf_bifs_dec_proto_list+10>    mov    r13, rsi
   0x7ffff7905ced <gf_bifs_dec_proto_list+13>    mov    esi, 1
   0x7ffff7905cf2 <gf_bifs_dec_proto_list+18>    push   r12
   0x7ffff7905cf4 <gf_bifs_dec_proto_list+20>    push   rbp
   0x7ffff7905cf5 <gf_bifs_dec_proto_list+21>    push   rbx
   0x7ffff7905cf6 <gf_bifs_dec_proto_list+22>    sub    rsp, 0x488
   0x7ffff7905cfd <gf_bifs_dec_proto_list+29>    mov    rax, qword ptr [rdi + 0x50]
────────────────────────────────────[ STACK ]─────────────────────────────────────
00:0000│ rsp 0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov
    dword ptr [rsp + 0x14], eax
01:0008│     0x7fffffff6cb0 —▸ 0x7ffff775bc80 ◂— 'gf_sg_command_new'
02:0010│     0x7fffffff6cb8 —▸ 0x5555555df330 ◂— 0x6b6
03:0018│     0x7fffffff6cc0 ◂— 0xffff6d50
04:0020│     0x7fffffff6cc8 —▸ 0x5555555de660 ◂— 0xfffffffd
05:0028│     0x7fffffff6cd0 —▸ 0x5555555df2f0 —▸ 0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
06:0030│     0x7fffffff6cd8 —▸ 0x5555555d4030 ◂— 0x0
07:0038│     0x7fffffff6ce0 ◂— 0x0
──────────────────────────────────[ BACKTRACE ]───────────────────────────────────
 ► f 0   0x7ffff7905ce0 gf_bifs_dec_proto_list
   f 1   0x7ffff79062d7 gf_bifs_dec_proto_list+1527
   f 2 0xb6b6b6b6b6b6b6b6
   f 3 0xb6b6b6b6b6b6b6b6
   f 4 0xb6b6b6b6b6b6b6b6
   f 5 0xb6b6b6b6b6b6b6b6
   f 6 0xb6b6b6b6b6b6b6b6
   f 7 0xb6b6b6b6b6b6b6b6
──────────────────────────────────────────────────────────────────────────────────
pwndbg> stack 200
00:0000│ rsp 0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov
    dword ptr [rsp + 0x14], eax
01:0008│     0x7fffffff6cb0 —▸ 0x7ffff775bc80 ◂— 'gf_sg_command_new'
02:0010│     0x7fffffff6cb8 —▸ 0x5555555df330 ◂— 0x6b6
03:0018│     0x7fffffff6cc0 ◂— 0xffff6d50
04:0020│     0x7fffffff6cc8 —▸ 0x5555555de660 ◂— 0xfffffffd
05:0028│     0x7fffffff6cd0 —▸ 0x5555555df2f0 —▸ 0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
06:0030│     0x7fffffff6cd8 —▸ 0x5555555d4030 ◂— 0x0
07:0038│     0x7fffffff6ce0 ◂— 0x0
... ↓        2 skipped
0a:0050│     0x7fffffff6cf8 —▸ 0x7ffff7fc7000 —▸ 0x7ffff7743000 ◂— 0x10102464c457f
0b:0058│     0x7fffffff6d00 —▸ 0x7fffffff6d90 ◂— 0xb6b6b6b6b6b6b6b6
0c:0060│     0x7fffffff6d08 ◂— 0x0
0d:0068│     0x7fffffff6d10 —▸ 0x7ffff7fc7000 —▸ 0x7ffff7743000 ◂— 0x10102464c457f
0e:0070│     0x7fffffff6d18 —▸ 0x7ffff7fc7368 —▸ 0x7ffff7ffe450 —▸ 0x7ffff73131e0 —▸ 0x7ffff7ffe190 ◂— ...
0f:0078│     0x7fffffff6d20 ◂— 0x0
10:0080│     0x7fffffff6d28 ◂— 0x0
11:0088│     0x7fffffff6d30 ◂— 0x1
12:0090│     0x7fffffff6d38 ◂— 0x7fff00000001
13:0098│ r15 0x7fffffff6d40 ◂— 0xb6b6b6b6b6b6b6b6
... ↓        180 skipped
pwndbg>
```


Stack Overflow in gf_bifs_dec_proto_list()
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Stack Overflow in gf_bifs_dec_proto_list()
Issue date:

--- start body ---
Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [x] I looked for a similar issue and couldn't find any.
- [x] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

A stack overflow was discovered in gf_bifs_dec_proto_list(). The vulnerability causes a segmentation fault and application crash.

**Version:**

```
MP4Box - GPAC version 1.1.0-DEV-revUNKNOWN_REV
(c) 2000-2021 Telecom Paris distributed under LGPL v2.1+ - http://gpac.io

Please cite our work in your research:
        GPAC Filters: https://doi.org/10.1145/3339825.3394929
        GPAC: https://doi.org/10.1145/1291233.1291452

GPAC Configuration:
Features: GPAC_CONFIG_LINUX GPAC_64_BITS GPAC_HAS_IPV6 GPAC_HAS_SOCK_UN GPAC_MINIMAL_ODF GPAC_HAS_QJS GPAC_HAS_JPEG GPAC_HAS_PNG GPAC_HAS_LINUX_DVB  GPAC_DISABLE_3D
```
**System information**
Ubuntu 20.04 focal, AMD EPYC 7742 64-Core @ 16x 2.25GHz

**command:**

```
./MP4Box -lsr poc_8
```
[poc_8.zip](https://github.com/gpac/gpac/files/7693778/poc_8.zip)

**Result**

```
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type stbk in parent minf
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample table !
[iso file] Track with no sample description box !
[iso file] Unknown box type 80rak in parent moov
[iso file] Incomplete box mdat - start 11495 size 832544
[iso file] Incomplete file while reading for dump - aborting parsing
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type stbk in parent minf
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample table !
[iso file] Track with no sample description box !
[iso file] Unknown box type 80rak in parent moov
[iso file] Incomplete box mdat - start 11495 size 832544
[iso file] Incomplete file while reading for dump - aborting parsing
MPEG-4 BIFS Scene Parsing
*** stack smashing detected ***: terminated
[1]    3737450 abort      ./MP4Box -lsr ./poc/poc_8
```

**gdb**

```
*** stack smashing detected ***: terminated

Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x0
*RBX  0x7ffff72bf040 ◂— 0x7ffff72bf040
*RCX  0x7ffff758218b (raise+203) ◂— mov    rax, qword ptr [rsp + 0x108]
 RDX  0x0
*RDI  0x2
*RSI  0x7fffffff68a0 ◂— 0x0
*R8   0x0
*R9   0x7fffffff68a0 ◂— 0x0
*R10  0x8
*R11  0x246
*R12  0x7fffffff6b20 ◂— 0x0
*R13  0x20
*R14  0x7ffff7ffb000 ◂— 0x202a2a2a00001000
*R15  0x1
*RBP  0x7fffffff6c20 —▸ 0x7ffff76f607c ◂— '*** %s ***: terminated\n'
*RSP  0x7fffffff68a0 ◂— 0x0
*RIP  0x7ffff758218b (raise+203) ◂— mov    rax, qword ptr [rsp + 0x108]
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
 ► 0x7ffff758218b <raise+203>    mov    rax, qword ptr [rsp + 0x108]
   0x7ffff7582193 <raise+211>    xor    rax, qword ptr fs:[0x28]
   0x7ffff758219c <raise+220>    jne    raise+260                <raise+260>
    ↓
   0x7ffff75821c4 <raise+260>    call   __stack_chk_fail                <__stack_chk_fail>

   0x7ffff75821c9                nop    dword ptr [rax]
   0x7ffff75821d0 <killpg>       endbr64
   0x7ffff75821d4 <killpg+4>     test   edi, edi
   0x7ffff75821d6 <killpg+6>     js     killpg+16                <killpg+16>

   0x7ffff75821d8 <killpg+8>     neg    edi
   0x7ffff75821da <killpg+10>    jmp    kill                <kill>

   0x7ffff75821df <killpg+15>    nop
──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsi r9 rsp 0x7fffffff68a0 ◂— 0x0
01:0008│            0x7fffffff68a8 —▸ 0x7ffff7546278 ◂— 0x10001200005bb2
02:0010│            0x7fffffff68b0 —▸ 0x7fffffff6c40 —▸ 0x5555555df3b0 ◂— 0x6b6
03:0018│            0x7fffffff68b8 —▸ 0x7ffff7fe7c2e ◂— mov    r11, rax
04:0020│            0x7fffffff68c0 ◂— 0xcd2709f17adf5bb6
05:0028│            0x7fffffff68c8 ◂— 0x0
06:0030│            0x7fffffff68d0 ◂— 0x7
07:0038│            0x7fffffff68d8 ◂— 0x1
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0   0x7ffff758218b raise+203
   f 1   0x7ffff7561859 abort+299
   f 2   0x7ffff75cc3ee __libc_message+670
   f 3   0x7ffff766eb4a __fortify_fail+42
   f 4   0x7ffff766eb16
   f 5   0x7ffff79064bc gf_bifs_dec_proto_list+2012
   f 6 0xb6b6b6b6b6b6b6b6
   f 7 0xb6b6b6b6b6b6b6b6
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg> bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007ffff7561859 in __GI_abort () at abort.c:79
#2  0x00007ffff75cc3ee in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff76f607c "*** %s ***: terminated\n") at ../sysdeps/posix/libc_fatal.c:155
#3  0x00007ffff766eb4a in __GI___fortify_fail (msg=msg@entry=0x7ffff76f6064 "stack smashing detected") at fortify_fail.c:26
#4  0x00007ffff766eb16 in __stack_chk_fail () at stack_chk_fail.c:24
#5  0x00007ffff79064bc in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#6  0xb6b6b6b6b6b6b6b6 in ?? ()
#7  0xb6b6b6b6b6b6b6b6 in ?? ()
#8  0xb6b6b6b6b6b6b6b6 in ?? ()
#9  0xb6b6b6b6b6b6b6b6 in ?? ()
#10 0xb6b6b6b6b6b6b6b6 in ?? ()
#11 0xb6b6b6b6b6b6b6b6 in ?? ()
#12 0xb6b6b6b6b6b6b6b6 in ?? ()
#13 0xb6b6b6b6b6b6b6b6 in ?? ()
#14 0xb6b6b6b6b6b6b6b6 in ?? ()
#15 0xb6b6b6b6b6b6b6b6 in ?? ()
#16 0xb6b6b6b6b6b6b6b6 in ?? ()
#17 0xb6b6b6b6b6b6b6b6 in ?? ()
#18 0xb6b6b6b6b6b6b6b6 in ?? ()
#19 0xb6b6b6b6b6b6b6b6 in ?? ()
#20 0xb6b6b6b6b6b6b6b6 in ?? ()
#21 0xb6b6b6b6b6b6b6b6 in ?? ()
#22 0xb6b6b6b6b6b6b6b6 in ?? ()
#23 0xb6b6b6b6b6b6b6b6 in ?? ()
#24 0xb6b6b6b6b6b6b6b6 in ?? ()
#25 0xb6b6b6b6b6b6b6b6 in ?? ()
#26 0xb6b6b6b6b6b6b6b6 in ?? ()
#27 0xb6b6b6b6b6b6b6b6 in ?? ()
#28 0xb6b6b6b6b6b6b6b6 in ?? ()
#29 0xb6b6b6b6b6b6b6b6 in ?? ()
#30 0xb6b6b6b6b6b6b6b6 in ?? ()
#31 0xb6b6b6b6b6b6b6b6 in ?? ()
#32 0xb6b6b6b6b6b6b6b6 in ?? ()
#33 0xb6b6b6b6b6b6b6b6 in ?? ()
#34 0xb6b6b6b6b6b6b6b6 in ?? ()
#35 0xb6b6b6b6b6b6b6b6 in ?? ()
#36 0xb6b6b6b6b6b6b6b6 in ?? ()
#37 0xb6b6b6b6b6b6b6b6 in ?? ()
#38 0xb6b6b6b6b6b6b6b6 in ?? ()
#39 0xb6b6b6b6b6b6b6b6 in ?? ()
#40 0xb6b6b6b6b6b6b6b6 in ?? ()
#41 0xb6b6b6b6b6b6b6b6 in ?? ()
#42 0xb6b6b6b6b6b6b6b6 in ?? ()
#43 0xb6b6b6b6b6b6b6b6 in ?? ()
#44 0xb6b6b6b6b6b6b6b6 in ?? ()
#45 0xb6b6b6b6b6b6b6b6 in ?? ()
#46 0xb6b6b6b6b6b6b6b6 in ?? ()
#47 0xb6b6b6b6b6b6b6b6 in ?? ()
#48 0xb6b6b6b6b6b6b6b6 in ?? ()
#49 0xb6b6b6b6b6b6b6b6 in ?? ()
#50 0xb6b6b6b6b6b6b6b6 in ?? ()
#51 0xb6b6b6b6b6b6b6b6 in ?? ()
#52 0xb6b6b6b6b6b6b6b6 in ?? ()
#53 0xb6b6b6b6b6b6b6b6 in ?? ()
#54 0xb6b6b6b6b6b6b6b6 in ?? ()
#55 0xb6b6b6b6b6b6b6b6 in ?? ()
#56 0xb6b6b6b6b6b6b6b6 in ?? ()
#57 0xb6b6b6b6b6b6b6b6 in ?? ()
#58 0xb6b6b6b6b6b6b6b6 in ?? ()
#59 0xb6b6b6b6b6b6b6b6 in ?? ()
#60 0xb6b6b6b6b6b6b6b6 in ?? ()
#61 0xb6b6b6b6b6b6b6b6 in ?? ()
#62 0xb6b6b6b6b6b6b6b6 in ?? ()
#63 0xb6b6b6b6b6b6b6b6 in ?? ()
#64 0xb6b6b6b6b6b6b6b6 in ?? ()
#65 0xb6b6b6b6b6b6b6b6 in ?? ()
#66 0xb6b6b6b6b6b6b6b6 in ?? ()
#67 0xb6b6b6b6b6b6b6b6 in ?? ()
#68 0xb6b6b6b6b6b6b6b6 in ?? ()
#69 0xb6b6b6b6b6b6b6b6 in ?? ()
#70 0xb6b6b6b6b6b6b6b6 in ?? ()
#71 0xb6b6b6b6b6b6b6b6 in ?? ()
#72 0xb6b6b6b6b6b6b6b6 in ?? ()
#73 0xb6b6b6b6b6b6b6b6 in ?? ()
#74 0xb6b6b6b6b6b6b6b6 in ?? ()
#75 0xb6b6b6b6b6b6b6b6 in ?? ()
#76 0xb6b6b6b6b6b6b6b6 in ?? ()
#77 0xb6b6b6b6b6b6b6b6 in ?? ()
#78 0xb6b6b6b6b6b6b6b6 in ?? ()
#79 0xb6b6b6b6b6b6b6b6 in ?? ()
#80 0xb6b6b6b6b6b6b6b6 in ?? ()
#81 0xb6b6b6b6b6b6b6b6 in ?? ()
#82 0xb6b6b6b6b6b6b6b6 in ?? ()
#83 0xb6b6b6b6b6b6b6b6 in ?? ()
#84 0xb6b6b6b6b6b6b6b6 in ?? ()
#85 0xb6b6b6b6b6b6b6b6 in ?? ()
#86 0xb6b6b6b6b6b6b6b6 in ?? ()
#87 0xb6b6b6b6b6b6b6b6 in ?? ()
#88 0xb6b6b6b6b6b6b6b6 in ?? ()
#89 0xb6b6b6b6b6b6b6b6 in ?? ()
#90 0xb6b6b6b6b6b6b6b6 in ?? ()
#91 0xb6b6b6b6b6b6b6b6 in ?? ()
#92 0xb6b6b6b6b6b6b6b6 in ?? ()
#93 0xb6b6b6b6b6b6b6b6 in ?? ()
#94 0xb6b6b6b6b6b6b6b6 in ?? ()
#95 0xb6b6b6b6b6b6b6b6 in ?? ()
#96 0xb6b6b6b6b6b6b6b6 in ?? ()
#97 0xb6b6b6b6b6b6b6b6 in ?? ()
#98 0x000080b6b6b6b6b6 in ?? ()
#99 0x0000000000000002 in ?? ()
#100 0x0000000000000044 in ?? ()
#101 0x0000000000000008 in ?? ()
#102 0x00005555555c7e60 in ?? ()
#103 0x00005555555cf500 in ?? ()
#104 0x0000000000000000 in ?? ()
```

`break gf_bifs_dec_proto_list`

```
Breakpoint 1, 0x00007ffff7905ce0 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
──────────────────────────────────[ REGISTERS ]───────────────────────────────────
 RAX  0x1
 RBX  0x5555555d23b0 ◂— 0x0
 RCX  0x710
 RDX  0x5555555df2f0 ◂— 0x0
 RDI  0x5555555de660 ◂— 0x0
 RSI  0x5555555d23b0 ◂— 0x0
 R8   0x0
 R9   0x0
 R10  0x7ffff775bc80 ◂— 'gf_sg_command_new'
 R11  0x7ffff7727be0 (main_arena+96) —▸ 0x5555555df320 ◂— 0x0
 R12  0x5555555df2f0 ◂— 0x0
 R13  0x5555555df1d0 ◂— 0x0
 R14  0x5555555d42a0 ◂— 0x0
 R15  0x0
 RBP  0x5555555de660 ◂— 0x0
 RSP  0x7fffffff7168 —▸ 0x7ffff7906559 (BD_DecSceneReplace+73) ◂— mov    r12d, eax
 RIP  0x7ffff7905ce0 (gf_bifs_dec_proto_list) ◂— endbr64
────────────────────────────────────[ DISASM ]────────────────────────────────────
 ► 0x7ffff7905ce0 <gf_bifs_dec_proto_list>       endbr64
   0x7ffff7905ce4 <gf_bifs_dec_proto_list+4>     push   r15
   0x7ffff7905ce6 <gf_bifs_dec_proto_list+6>     push   r14
   0x7ffff7905ce8 <gf_bifs_dec_proto_list+8>     push   r13
   0x7ffff7905cea <gf_bifs_dec_proto_list+10>    mov    r13, rsi
   0x7ffff7905ced <gf_bifs_dec_proto_list+13>    mov    esi, 1
   0x7ffff7905cf2 <gf_bifs_dec_proto_list+18>    push   r12
   0x7ffff7905cf4 <gf_bifs_dec_proto_list+20>    push   rbp
   0x7ffff7905cf5 <gf_bifs_dec_proto_list+21>    push   rbx
   0x7ffff7905cf6 <gf_bifs_dec_proto_list+22>    sub    rsp, 0x488
   0x7ffff7905cfd <gf_bifs_dec_proto_list+29>    mov    rax, qword ptr [rdi + 0x50]
────────────────────────────────────[ STACK ]─────────────────────────────────────
00:0000│ rsp 0x7fffffff7168 —▸ 0x7ffff7906559 (BD_DecSceneReplace+73) ◂— mov    r12d, eax
01:0008│     0x7fffffff7170 —▸ 0x5555555de660 ◂— 0x0
02:0010│     0x7fffffff7178 —▸ 0x5555555df250 —▸ 0x5555555d4030 ◂— 0x0
03:0018│     0x7fffffff7180 —▸ 0x5555555d23b0 ◂— 0x0
04:0020│     0x7fffffff7188 —▸ 0x5555555df1d0 ◂— 0x0
05:0028│     0x7fffffff7190 —▸ 0x5555555d42a0 ◂— 0x0
06:0030│     0x7fffffff7198 —▸ 0x7ffff7914e5e (BM_SceneReplace+110) ◂— mov    rsi,
 rbp
07:0038│     0x7fffffff71a0 —▸ 0x5555555dea00 —▸ 0x5555555df1f0 —▸ 0x5555555df1a0 ◂— 0x0
──────────────────────────────────[ BACKTRACE ]───────────────────────────────────
 ► f 0   0x7ffff7905ce0 gf_bifs_dec_proto_list
   f 1   0x7ffff7906559 BD_DecSceneReplace+73
   f 2   0x7ffff7914e5e BM_SceneReplace+110
   f 3   0x7ffff7915023 BM_ParseCommand+179
   f 4   0x7ffff7915353 gf_bifs_decode_command_list+163
   f 5   0x7ffff7aa1d91 gf_sm_load_run_isom+1217
   f 6   0x5555555844a8 dump_isom_scene+760
   f 7   0x55555557b42c mp4boxMain+9228
──────────────────────────────────────────────────────────────────────────────────
pwndbg> c
Continuing.

Breakpoint 1, 0x00007ffff7905ce0 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
──────────────────────────────────[ REGISTERS ]───────────────────────────────────
*RAX  0x0
*RBX  0x5555555df330 ◂— 0x6b6
*RCX  0x5555555dfdf0 ◂— 0x0
*RDX  0x0
 RDI  0x5555555de660 ◂— 0xfffffffd
 RSI  0x5555555d23b0 ◂— 0x0
*R8   0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
*R9   0x7c
*R10  0x7ffff775bf0a ◂— 'gf_sg_proto_get_graph'
*R11  0x7ffff788b850 (gf_sg_proto_get_graph) ◂— endbr64
*R12  0x5555555de660 ◂— 0xfffffffd
*R13  0x5555555d23b0 ◂— 0x0
 R14  0x5555555d42a0 ◂— 0x0
*R15  0x7fffffff6d40 ◂— 0xb6b6b6b6b6b6b6b6
*RBP  0x6b6
*RSP  0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov    dword ptr [rsp + 0x14], eax
 RIP  0x7ffff7905ce0 (gf_bifs_dec_proto_list) ◂— endbr64
────────────────────────────────────[ DISASM ]────────────────────────────────────
 ► 0x7ffff7905ce0 <gf_bifs_dec_proto_list>       endbr64
   0x7ffff7905ce4 <gf_bifs_dec_proto_list+4>     push   r15
   0x7ffff7905ce6 <gf_bifs_dec_proto_list+6>     push   r14
   0x7ffff7905ce8 <gf_bifs_dec_proto_list+8>     push   r13
   0x7ffff7905cea <gf_bifs_dec_proto_list+10>    mov    r13, rsi
   0x7ffff7905ced <gf_bifs_dec_proto_list+13>    mov    esi, 1
   0x7ffff7905cf2 <gf_bifs_dec_proto_list+18>    push   r12
   0x7ffff7905cf4 <gf_bifs_dec_proto_list+20>    push   rbp
   0x7ffff7905cf5 <gf_bifs_dec_proto_list+21>    push   rbx
   0x7ffff7905cf6 <gf_bifs_dec_proto_list+22>    sub    rsp, 0x488
   0x7ffff7905cfd <gf_bifs_dec_proto_list+29>    mov    rax, qword ptr [rdi + 0x50]
────────────────────────────────────[ STACK ]─────────────────────────────────────
00:0000│ rsp 0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov
    dword ptr [rsp + 0x14], eax
01:0008│     0x7fffffff6cb0 —▸ 0x7ffff775bc80 ◂— 'gf_sg_command_new'
02:0010│     0x7fffffff6cb8 —▸ 0x5555555df330 ◂— 0x6b6
03:0018│     0x7fffffff6cc0 ◂— 0xffff6d50
04:0020│     0x7fffffff6cc8 —▸ 0x5555555de660 ◂— 0xfffffffd
05:0028│     0x7fffffff6cd0 —▸ 0x5555555df2f0 —▸ 0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
06:0030│     0x7fffffff6cd8 —▸ 0x5555555d4030 ◂— 0x0
07:0038│     0x7fffffff6ce0 ◂— 0x0
──────────────────────────────────[ BACKTRACE ]───────────────────────────────────
 ► f 0   0x7ffff7905ce0 gf_bifs_dec_proto_list
   f 1   0x7ffff79062d7 gf_bifs_dec_proto_list+1527
   f 2 0xb6b6b6b6b6b6b6b6
   f 3 0xb6b6b6b6b6b6b6b6
   f 4 0xb6b6b6b6b6b6b6b6
   f 5 0xb6b6b6b6b6b6b6b6
   f 6 0xb6b6b6b6b6b6b6b6
   f 7 0xb6b6b6b6b6b6b6b6
──────────────────────────────────────────────────────────────────────────────────
pwndbg> stack 200
00:0000│ rsp 0x7fffffff6ca8 —▸ 0x7ffff79062d7 (gf_bifs_dec_proto_list+1527) ◂— mov
    dword ptr [rsp + 0x14], eax
01:0008│     0x7fffffff6cb0 —▸ 0x7ffff775bc80 ◂— 'gf_sg_command_new'
02:0010│     0x7fffffff6cb8 —▸ 0x5555555df330 ◂— 0x6b6
03:0018│     0x7fffffff6cc0 ◂— 0xffff6d50
04:0020│     0x7fffffff6cc8 —▸ 0x5555555de660 ◂— 0xfffffffd
05:0028│     0x7fffffff6cd0 —▸ 0x5555555df2f0 —▸ 0x5555555dfda0 —▸ 0x5555555df330 ◂— 0x6b6
06:0030│     0x7fffffff6cd8 —▸ 0x5555555d4030 ◂— 0x0
07:0038│     0x7fffffff6ce0 ◂— 0x0
... ↓        2 skipped
0a:0050│     0x7fffffff6cf8 —▸ 0x7ffff7fc7000 —▸ 0x7ffff7743000 ◂— 0x10102464c457f
0b:0058│     0x7fffffff6d00 —▸ 0x7fffffff6d90 ◂— 0xb6b6b6b6b6b6b6b6
0c:0060│     0x7fffffff6d08 ◂— 0x0
0d:0068│     0x7fffffff6d10 —▸ 0x7ffff7fc7000 —▸ 0x7ffff7743000 ◂— 0x10102464c457f
0e:0070│     0x7fffffff6d18 —▸ 0x7ffff7fc7368 —▸ 0x7ffff7ffe450 —▸ 0x7ffff73131e0 —▸ 0x7ffff7ffe190 ◂— ...
0f:0078│     0x7fffffff6d20 ◂— 0x0
10:0080│     0x7fffffff6d28 ◂— 0x0
11:0088│     0x7fffffff6d30 ◂— 0x1
12:0090│     0x7fffffff6d38 ◂— 0x7fff00000001
13:0098│ r15 0x7fffffff6d40 ◂— 0xb6b6b6b6b6b6b6b6
... ↓        180 skipped
pwndbg>
```


--- end body ---

comments :
--- start comments ---

--- end comments ---