GPAC v1.1.0 was discovered to contain an invalid call in the function gf_node_changed(). This vulnerability can lead to a Denial of Service (DoS).
cpe:2.3:a:gpac:gpac:1.1.0:*:*:*:*:*:*:*
56FF2AB9-517D-43A7-867E-9FB6B833194F
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/

An invalid call was discovered in gf_node_changed(). 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 -bt ./poc/poc_11
```
[poc_11.zip](https://github.com/gpac/gpac/files/7696151/poc_11.zip)

**Result**

```
./MP4Box -bt ./poc/poc_10
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type traI in parent moov
[iso file] Box "stss" (start 9939) has 32 extra bytes
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample description box !
[iso file] Incomplete box mdat - start 11495 size 861261
[iso file] Incomplete file while reading for dump - aborting parsing
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type traI in parent moov
[iso file] Box "stss" (start 9939) has 32 extra bytes
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample description box !
[iso file] Incomplete box mdat - start 11495 size 861261
[iso file] Incomplete file while reading for dump - aborting parsing
MPEG-4 BIFS Scene Parsing
[1]    1142870 segmentation fault  ./MP4Box -bt ./poc/poc_10
```

**gdb**

```
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000001 in ?? ()
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
 RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RSP  0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
 RIP  0x1
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
Invalid address 0x1










──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
01:0008│     0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
05:0028│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
07:0038│     0x7fffffff6ac0 ◂— 0x2
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0              0x1
   f 1   0x7ffff784a1ca gf_node_changed+218
   f 2   0x7ffff784b675 gf_sg_reset+805
   f 3   0x7ffff784ba47 gf_sg_del+55
   f 4   0x7ffff788b7f8 gf_sg_proto_del+424
   f 5   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 6   0x7ffff7913a11 BM_ParseInsert+769
   f 7   0x7ffff7914fe1 BM_ParseCommand+113
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg> bt
#0  0x0000000000000001 in ?? ()
#1  0x00007ffff784a1ca in gf_node_changed () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#2  0x00007ffff784b675 in gf_sg_reset () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#3  0x00007ffff784ba47 in gf_sg_del () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#4  0x00007ffff788b7f8 in gf_sg_proto_del () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#5  0x00007ffff7905f88 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#6  0x00007ffff7913a11 in BM_ParseInsert () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#7  0x00007ffff7914fe1 in BM_ParseCommand () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#8  0x00007ffff7915353 in gf_bifs_decode_command_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#9  0x00007ffff7aa1d91 in gf_sm_load_run_isom () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#10 0x00005555555844a8 in dump_isom_scene ()
#11 0x000055555557b42c in mp4boxMain ()
#12 0x00007ffff75630b3 in __libc_start_main (main=0x55555556c420 <main>, argc=3, argv=0x7fffffffe1b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe1a8) at ../csu/libc-start.c:308
#13 0x000055555556c45e in _start ()
```

`break gf_node_changed`

```
pwndbg>
0x00007ffff784a1c8 in gf_node_changed () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
*RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RSP  0x7fffffff6a90 ◂— 0x0
*RIP  0x7ffff784a1c8 (gf_node_changed+216) ◂— call   rax
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
   0x7ffff784a1b6 <gf_node_changed+198>    je     gf_node_changed+223                <gf_node_changed+223>

   0x7ffff784a1b8 <gf_node_changed+200>    mov    rdi, qword ptr [r12 + 0x28]
   0x7ffff784a1bd <gf_node_changed+205>    mov    rcx, rbx
   0x7ffff784a1c0 <gf_node_changed+208>    mov    rdx, rbp
   0x7ffff784a1c3 <gf_node_changed+211>    mov    esi, 1
 ► 0x7ffff784a1c8 <gf_node_changed+216>    call   rax                           <1>

   0x7ffff784a1ca <gf_node_changed+218>    test   rbx, rbx
   0x7ffff784a1cd <gf_node_changed+221>    je     gf_node_changed+233                <gf_node_changed+233>

   0x7ffff784a1cf <gf_node_changed+223>    mov    eax, dword ptr [rbx]
   0x7ffff784a1d1 <gf_node_changed+225>    sub    eax, 0x63
   0x7ffff784a1d4 <gf_node_changed+228>    and    eax, 0xfffffffd
──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
04:0020│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
05:0028│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ac0 ◂— 0x2
07:0038│     0x7fffffff6ac8 ◂— 0x8000000000000006
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0   0x7ffff784a1c8 gf_node_changed+216
   f 1   0x7ffff784b675 gf_sg_reset+805
   f 2   0x7ffff784ba47 gf_sg_del+55
   f 3   0x7ffff788b7f8 gf_sg_proto_del+424
   f 4   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 5   0x7ffff7913a11 BM_ParseInsert+769
   f 6   0x7ffff7914fe1 BM_ParseCommand+113
   f 7   0x7ffff7915353 gf_bifs_decode_command_list+163
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg>

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000001 in ?? ()
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
 RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
*RSP  0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
*RIP  0x1
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
Invalid address 0x1










──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
01:0008│     0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
05:0028│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
07:0038│     0x7fffffff6ac0 ◂— 0x2
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0              0x1
   f 1   0x7ffff784a1ca gf_node_changed+218
   f 2   0x7ffff784b675 gf_sg_reset+805
   f 3   0x7ffff784ba47 gf_sg_del+55
   f 4   0x7ffff788b7f8 gf_sg_proto_del+424
   f 5   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 6   0x7ffff7913a11 BM_ParseInsert+769
   f 7   0x7ffff7914fe1 BM_ParseCommand+113
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg>
```


Invalid call in gf_node_changed()
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Invalid call in gf_node_changed()
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/

An invalid call was discovered in gf_node_changed(). 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 -bt ./poc/poc_11
```
[poc_11.zip](https://github.com/gpac/gpac/files/7696151/poc_11.zip)

**Result**

```
./MP4Box -bt ./poc/poc_10
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type traI in parent moov
[iso file] Box "stss" (start 9939) has 32 extra bytes
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample description box !
[iso file] Incomplete box mdat - start 11495 size 861261
[iso file] Incomplete file while reading for dump - aborting parsing
[iso file] extra box maxr found in hinf, deleting
[iso file] Unknown box type traI in parent moov
[iso file] Box "stss" (start 9939) has 32 extra bytes
[iso file] extra box maxr found in hinf, deleting
[iso file] Track with no sample description box !
[iso file] Incomplete box mdat - start 11495 size 861261
[iso file] Incomplete file while reading for dump - aborting parsing
MPEG-4 BIFS Scene Parsing
[1]    1142870 segmentation fault  ./MP4Box -bt ./poc/poc_10
```

**gdb**

```
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000001 in ?? ()
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
 RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RSP  0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
 RIP  0x1
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
Invalid address 0x1










──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
01:0008│     0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
05:0028│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
07:0038│     0x7fffffff6ac0 ◂— 0x2
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0              0x1
   f 1   0x7ffff784a1ca gf_node_changed+218
   f 2   0x7ffff784b675 gf_sg_reset+805
   f 3   0x7ffff784ba47 gf_sg_del+55
   f 4   0x7ffff788b7f8 gf_sg_proto_del+424
   f 5   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 6   0x7ffff7913a11 BM_ParseInsert+769
   f 7   0x7ffff7914fe1 BM_ParseCommand+113
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg> bt
#0  0x0000000000000001 in ?? ()
#1  0x00007ffff784a1ca in gf_node_changed () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#2  0x00007ffff784b675 in gf_sg_reset () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#3  0x00007ffff784ba47 in gf_sg_del () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#4  0x00007ffff788b7f8 in gf_sg_proto_del () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#5  0x00007ffff7905f88 in gf_bifs_dec_proto_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#6  0x00007ffff7913a11 in BM_ParseInsert () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#7  0x00007ffff7914fe1 in BM_ParseCommand () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#8  0x00007ffff7915353 in gf_bifs_decode_command_list () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#9  0x00007ffff7aa1d91 in gf_sm_load_run_isom () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
#10 0x00005555555844a8 in dump_isom_scene ()
#11 0x000055555557b42c in mp4boxMain ()
#12 0x00007ffff75630b3 in __libc_start_main (main=0x55555556c420 <main>, argc=3, argv=0x7fffffffe1b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe1a8) at ../csu/libc-start.c:308
#13 0x000055555556c45e in _start ()
```

`break gf_node_changed`

```
pwndbg>
0x00007ffff784a1c8 in gf_node_changed () from /root/fuckit/test/gpac1210/bin/gcc/libgpac.so.10
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
*RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RSP  0x7fffffff6a90 ◂— 0x0
*RIP  0x7ffff784a1c8 (gf_node_changed+216) ◂— call   rax
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
   0x7ffff784a1b6 <gf_node_changed+198>    je     gf_node_changed+223                <gf_node_changed+223>

   0x7ffff784a1b8 <gf_node_changed+200>    mov    rdi, qword ptr [r12 + 0x28]
   0x7ffff784a1bd <gf_node_changed+205>    mov    rcx, rbx
   0x7ffff784a1c0 <gf_node_changed+208>    mov    rdx, rbp
   0x7ffff784a1c3 <gf_node_changed+211>    mov    esi, 1
 ► 0x7ffff784a1c8 <gf_node_changed+216>    call   rax                           <1>

   0x7ffff784a1ca <gf_node_changed+218>    test   rbx, rbx
   0x7ffff784a1cd <gf_node_changed+221>    je     gf_node_changed+233                <gf_node_changed+233>

   0x7ffff784a1cf <gf_node_changed+223>    mov    eax, dword ptr [rbx]
   0x7ffff784a1d1 <gf_node_changed+225>    sub    eax, 0x63
   0x7ffff784a1d4 <gf_node_changed+228>    and    eax, 0xfffffffd
──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
04:0020│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
05:0028│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ac0 ◂— 0x2
07:0038│     0x7fffffff6ac8 ◂— 0x8000000000000006
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0   0x7ffff784a1c8 gf_node_changed+216
   f 1   0x7ffff784b675 gf_sg_reset+805
   f 2   0x7ffff784ba47 gf_sg_del+55
   f 3   0x7ffff788b7f8 gf_sg_proto_del+424
   f 4   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 5   0x7ffff7913a11 BM_ParseInsert+769
   f 6   0x7ffff7914fe1 BM_ParseCommand+113
   f 7   0x7ffff7915353 gf_bifs_decode_command_list+163
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg>

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000001 in ?? ()
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
────────────────────────────────────────────[ REGISTERS ]─────────────────────────────────────────────
 RAX  0x1
 RBX  0x7fffffff6bc0 ◂— 0x0
 RCX  0x7fffffff6bc0 ◂— 0x0
 RDX  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 RDI  0x0
 RSI  0x1
 R8   0x0
 R9   0x0
 R10  0x7ffff775ba62 ◂— 'gf_node_changed'
 R11  0x7ffff784a0f0 (gf_node_changed) ◂— endbr64
 R12  0x5555555c6010 ◂— 0x200000002
 R13  0x5555555e5100 ◂— 0x0
 R14  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
 R15  0x7fffffff6bc0 ◂— 0x0
 RBP  0x5555555e6230 —▸ 0x5555555e6270 ◂— 0x0
*RSP  0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
*RIP  0x1
──────────────────────────────────────────────[ DISASM ]──────────────────────────────────────────────
Invalid address 0x1










──────────────────────────────────────────────[ STACK ]───────────────────────────────────────────────
00:0000│ rsp 0x7fffffff6a88 —▸ 0x7ffff784a1ca (gf_node_changed+218) ◂— test   rbx, rbx
01:0008│     0x7fffffff6a90 ◂— 0x0
... ↓        3 skipped
05:0028│     0x7fffffff6ab0 ◂— 0x7374636f /* 'octs' */
06:0030│     0x7fffffff6ab8 —▸ 0x5555555e4fd0 ◂— 0x7374636f /* 'octs' */
07:0038│     0x7fffffff6ac0 ◂— 0x2
────────────────────────────────────────────[ BACKTRACE ]─────────────────────────────────────────────
 ► f 0              0x1
   f 1   0x7ffff784a1ca gf_node_changed+218
   f 2   0x7ffff784b675 gf_sg_reset+805
   f 3   0x7ffff784ba47 gf_sg_del+55
   f 4   0x7ffff788b7f8 gf_sg_proto_del+424
   f 5   0x7ffff7905f88 gf_bifs_dec_proto_list+680
   f 6   0x7ffff7913a11 BM_ParseInsert+769
   f 7   0x7ffff7914fe1 BM_ParseCommand+113
──────────────────────────────────────────────────────────────────────────────────────────────────────
pwndbg>
```


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