Gửi #807648: tsMuxer git-7f8667d Commit ID：7f8667d1e6100a5b6407340d91ad80d57d976e58 Heap-based Buffer Overflow

heap-buffer-overflow in tsMuxer/hevc.cpp:86:29

## version
```
commit 7f8667d1e6100a5b6407340d91ad80d57d976e58 (HEAD -> master, tag: nightly-2024-06-06-02-00-53, origin/master, origin/HEAD)
Author: iwashiira <[email protected]>
Date: Thu Jun 6 03:13:25 2024 +0900

added check for negative track_id values (#882)
```

## reproduce
```shell
cd tsMuxer
mkdir build && cd build
cmake ../ -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_FLAGS="-fsanitize=address" -DCMAKE_CXX_FLAGS="-fsanitize=address"
make
```

```
./tsmuxer poc
```

Information :
```

tsMuxeR version git-7f8667d. github.com/justdan96/tsMuxer
HEVC muxing fps is not set. Get fps from stream. Value: 6849.85
HEVC manual defined fps doesn't equal to stream fps. Change HEVC fps from 1 to 6849.85
=================================================================
==4077262==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000001f4b at pc 0x562182db7f93 bp 0x7ffe92b922b0 sp 0x7ffe92b922a8
READ of size 1 at 0x603000001f4b thread T0
#0 0x562182db7f92 in HevcUnit::updateBits(int, int, unsigned int) const /AFLplusplus/tsMuxer_prev/tsMuxer/hevc.cpp:86:29
#1 0x562182dba190 in HevcVpsUnit::setFPS(double) /AFLplusplus/tsMuxer_prev/tsMuxer/hevc.cpp:236:5
#2 0x562182dcad34 in HEVCStreamReader::updateStreamFps(void*, unsigned char*, unsigned char*, int) /AFLplusplus/tsMuxer_prev/tsMuxer/hevcStreamReader.cpp:373:10
#3 0x562182f228d6 in MPEGStreamReader::updateFPS(void*, unsigned char*, unsigned char*, int) /AFLplusplus/tsMuxer_prev/tsMuxer/mpegStreamReader.cpp:307:9
#4 0x562182dc63ff in HEVCStreamReader::checkStream(unsigned char*, int) /AFLplusplus/tsMuxer_prev/tsMuxer/hevcStreamReader.cpp:69:17
#5 0x562182e70104 in METADemuxer::detectTrackReader(unsigned char*, int, AbstractStreamReader::ContainerType, int, int) /AFLplusplus/tsMuxer_prev/tsMuxer/metaDemuxer.cpp:785:22
#6 0x562182e6d4dd in METADemuxer::DetectStreamReader(BufferedReaderManager const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, bool) /AFLplusplus/tsMuxer_prev/tsMuxer/metaDemuxer.cpp:685:35
#7 0x562182e03473 in detectStreamReader(char const*, MPLSParser*, bool) /AFLplusplus/tsMuxer_prev/tsMuxer/main.cpp:114:34
#8 0x562182e0b33e in main /AFLplusplus/tsMuxer_prev/tsMuxer/main.cpp:689:17
#9 0x7fe686d76d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#10 0x7fe686d76e3f in __libc_start_main csu/../csu/libc-start.c:392:3
#11 0x562182c3f594 in _start (/AFLplusplus/tsMuxer_prev/install/bin/tsmuxer+0x23b594) (BuildId: e84fab34fa61c261f080dbcd6a5e78289b568c7f)

0x603000001f4b is located 3 bytes after 24-byte region [0x603000001f30,0x603000001f48)
allocated by thread T0 here:
#0 0x562182d13e0d in operator new[](unsigned long) (/AFLplusplus/tsMuxer_prev/install/bin/tsmuxer+0x30fe0d) (BuildId: e84fab34fa61c261f080dbcd6a5e78289b568c7f)
#1 0x562182db779b in HevcUnit::decodeBuffer(unsigned char const*, unsigned char const*) /AFLplusplus/tsMuxer_prev/tsMuxer/hevc.cpp:41:19
#2 0x562182dc6240 in HEVCStreamReader::checkStream(unsigned char*, int) /AFLplusplus/tsMuxer_prev/tsMuxer/hevcStreamReader.cpp:64:20
#3 0x562182e70104 in METADemuxer::detectTrackReader(unsigned char*, int, AbstractStreamReader::ContainerType, int, int) /AFLplusplus/tsMuxer_prev/tsMuxer/metaDemuxer.cpp:785:22
#4 0x562182e6d4dd in METADemuxer::DetectStreamReader(BufferedReaderManager const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, bool) /AFLplusplus/tsMuxer_prev/tsMuxer/metaDemuxer.cpp:685:35
#5 0x562182e03473 in detectStreamReader(char const*, MPLSParser*, bool) /AFLplusplus/tsMuxer_prev/tsMuxer/main.cpp:114:34
#6 0x562182e0b33e in main /AFLplusplus/tsMuxer_prev/tsMuxer/main.cpp:689:17
#7 0x7fe686d76d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16

SUMMARY: AddressSanitizer: heap-buffer-overflow /AFLplusplus/tsMuxer_prev/tsMuxer/hevc.cpp:86:29 in HevcUnit::updateBits(int, int, unsigned int) const
Shadow bytes around the buggy address:
0x603000001c80: fa fa fd fd fd fa fa fa fd fd fd fa fa fa fd fd
0x603000001d00: fd fd fa fa fd fd fd fa fa fa fd fd fd fa fa fa
0x603000001d80: fd fd fd fa fa fa fd fd fd fd fa fa fd fd fd fa
0x603000001e00: fa fa fd fd fd fa fa fa fd fd fd fd fa fa fd fd
0x603000001e80: fd fa fa fa fd fd fd fa fa fa fd fd fd fa fa fa
=>0x603000001f00: fd fd fd fa fa fa 00 00 00[fa]fa fa fa fa fa fa
0x603000001f80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x603000002000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x603000002080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x603000002100: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x603000002180: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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
==4077262==ABORTING

```

• Nguồn: ⚠️ https://github.com/justdan96/tsMuxer/issues/896
• Người dùng: Fantasy (UID 69897)
• Đệ trình: 18/04/2026 14:35 (cách đây 2 các tháng)
• Kiểm duyệt: 03/05/2026 19:13 (15 days later)
• Trạng thái: Bản sao
• Mục VulDB: 194035 [tsMuxer git-2678966 hevc.cpp HevcUnit::updateBits tràn bộ đệm]
• điểm: 0