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[BUG] global buffer overflow when parsing TS format #696

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opened 2026-01-29 16:51:23 +00:00 by claunia · 1 comment
claunia commented 2026-01-29 16:51:23 +00:00
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Originally created by @Me19m4 on GitHub (Mar 23, 2022).

CCExtractor version: {replace with the version}

Version: 0.94

In raising this issue, I confirm the following:

  • I have read and understood the contributors guide.

  • I have checked that the bug-fix I am reporting can be replicated, or that the feature I am suggesting isn't already present.

  • I have checked that the issue I'm posting isn't already reported.

  • I have checked that the issue I'm porting isn't already solved and no duplicates exist in closed issues and in opened issues

  • I have checked the pull requests tab for existing solutions/implementations to my issue/suggestion.

  • I have used the latest available version of CCExtractor to verify this issue exists.

  • I have ticked all the boxes in this section and to prove it I'm deleting the section completely to remove boilerplate text.

  • What platform did you use? {Window/Linux/Mac}

    Ubuntu21.10

  • What were the used arguments?

    ./ccextractor global_example.ts

Additional information


==3374324==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000001844050 at pc 0x0000016061df bp 0x7ffcd288a9f0 sp 0x7ffcd288a9e8
READ of size 8 at 0x000001844050 thread T0
    #0 0x16061de in slice_header /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:1166:5
    #1 0x1600b09 in do_NAL /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:125:3
    #2 0x160743c in process_avc /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:249:3
    #3 0x167c4c2 in process_data /home/moqi/ccextractor/src/lib_ccx/general_loop.c:721:9
    #4 0x168281f in general_loop /home/moqi/ccextractor/src/lib_ccx/general_loop.c:1025:10
    #5 0x1107d55 in api_start /home/moqi/ccextractor/src/ccextractor.c:205:11
    #6 0x110bed3 in main /home/moqi/ccextractor/src/ccextractor.c:463:18
    #7 0x7fe847049fcf in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #8 0x7fe84704a07c in __libc_start_main csu/../csu/libc-start.c:409:3
    #9 0x58c604 in _start (/home/moqi/ccextractor/src/build/ccextractor+0x58c604)

0x000001844050 is located 0 bytes to the right of global variable 'slice_types' defined in '/home/moqi/ccextractor/src/lib_ccx/ccx_common_constants.c:91:13' (0x1844000) of size 80
SUMMARY: AddressSanitizer: global-buffer-overflow /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:1166:5 in slice_header
Shadow bytes around the buggy address:
  0x0000803007b0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000803007c0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000803007d0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000803007e0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000803007f0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
=>0x000080300800: 00 00 00 00 00 00 00 00 00 00[f9]f9 f9 f9 f9 f9
  0x000080300810: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x000080300820: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x000080300830: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x000080300840: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x000080300850: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
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

global_example.ts link :

https://drive.google.com/file/d/1CiRfzglUdyyXz3PwLvJmbJCl9-03SIuj/view?usp=sharing

Originally created by @Me19m4 on GitHub (Mar 23, 2022). CCExtractor version: {replace with the version} Version: 0.94 # In raising this issue, I confirm the following: - [x] I have read and understood the [contributors guide](https://github.com/CCExtractor/ccextractor/blob/master/.github/CONTRIBUTING.md). - [x] I have checked that the bug-fix I am reporting can be replicated, or that the feature I am suggesting isn't already present. - [x] I have checked that the issue I'm posting isn't already reported. - [x] I have checked that the issue I'm porting isn't already solved and no duplicates exist in [closed issues](https://github.com/CCExtractor/ccextractor/issues?q=is%3Aissue+is%3Aclosed) and in [opened issues](https://github.com/CCExtractor/ccextractor/issues) - [ ] I have checked the pull requests tab for existing solutions/implementations to my issue/suggestion. - [x] I have used the latest available version of CCExtractor to verify this issue exists. - [x] I have ticked all the boxes in this section and to prove it I'm deleting the section completely to remove boilerplate text. - What platform did you use? {Window/Linux/Mac} `Ubuntu21.10` - What were the used arguments? ` ./ccextractor global_example.ts` # Additional information ``` ==3374324==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000001844050 at pc 0x0000016061df bp 0x7ffcd288a9f0 sp 0x7ffcd288a9e8 READ of size 8 at 0x000001844050 thread T0 #0 0x16061de in slice_header /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:1166:5 #1 0x1600b09 in do_NAL /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:125:3 #2 0x160743c in process_avc /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:249:3 #3 0x167c4c2 in process_data /home/moqi/ccextractor/src/lib_ccx/general_loop.c:721:9 #4 0x168281f in general_loop /home/moqi/ccextractor/src/lib_ccx/general_loop.c:1025:10 #5 0x1107d55 in api_start /home/moqi/ccextractor/src/ccextractor.c:205:11 #6 0x110bed3 in main /home/moqi/ccextractor/src/ccextractor.c:463:18 #7 0x7fe847049fcf in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #8 0x7fe84704a07c in __libc_start_main csu/../csu/libc-start.c:409:3 #9 0x58c604 in _start (/home/moqi/ccextractor/src/build/ccextractor+0x58c604) 0x000001844050 is located 0 bytes to the right of global variable 'slice_types' defined in '/home/moqi/ccextractor/src/lib_ccx/ccx_common_constants.c:91:13' (0x1844000) of size 80 SUMMARY: AddressSanitizer: global-buffer-overflow /home/moqi/ccextractor/src/lib_ccx/avc_functions.c:1166:5 in slice_header Shadow bytes around the buggy address: 0x0000803007b0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x0000803007c0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x0000803007d0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x0000803007e0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x0000803007f0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 =>0x000080300800: 00 00 00 00 00 00 00 00 00 00[f9]f9 f9 f9 f9 f9 0x000080300810: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x000080300820: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x000080300830: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x000080300840: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 0x000080300850: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 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 ``` global_example.ts link : https://drive.google.com/file/d/1CiRfzglUdyyXz3PwLvJmbJCl9-03SIuj/view?usp=sharing
claunia added the GSOC-2023 label 2026-01-29 16:51:23 +00:00
claunia commented 2026-01-29 16:51:24 +00:00
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@cfsmp3 commented on GitHub (Mar 23, 2023):

Confirmed. This one -I suspect- won't be trivial.

@cfsmp3 commented on GitHub (Mar 23, 2023): Confirmed. This one -I suspect- won't be trivial.
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