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Stack-buffer-overflow (/libde265/build/libde265/liblibde265.so+0x148bb1) in void put_epel_hv_fallback(short*, long, unsigned short const*, long, int, int, int, int, short*, int)
Version
$ ./dec265 -h
dec265 v1.0.8
--------------
usage: dec265 [options] videofile.bin
The video file must be a raw bitstream, or a stream with NAL units (option -n).
options:
-q, --quiet do not show decoded image
-t, --threads N set number of worker threads (0 - no threading)
-c, --check-hash perform hash check
-n, --nal input is a stream with 4-byte length prefixed NAL units
-f, --frames N set number of frames to process
-o, --output write YUV reconstruction
-d, --dump dump headers
-0, --noaccel do not use any accelerated code (SSE)
-v, --verbose increase verbosity level (up to 3 times)
-L, --no-logging disable logging
-B, --write-bytestream FILENAME write raw bytestream (from NAL input)
-m, --measure YUV compute PSNRs relative to reference YUV
-T, --highest-TID selecthighest temporal sublayer to decode
--disable-deblocking disable deblocking filter
--disable-sao disable sample-adaptive offset filter
-h, --help show help
Replay
git clone https://github.com/strukturag/libde265.git
cd libde265
mkdir build
cd build
cmake ../ -DCMAKE_CXX_FLAGS="-fsanitize=address"
make -j$(nproc)
./dec265/dec265 poc10-1
./dec265/dec265 poc10-2
./dec265/dec265 poc10-3
ASAN
WARNING: end_of_sub_stream_one_bit not set to 1 when it should be
WARNING: CTB outside of image area (concealing stream error...)
=================================================================
==49284==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffd5d1376e1 at pc 0x7fc6e4cc7bb2 bp 0x7ffd5d134ea0 sp 0x7ffd5d134e90
READ of size 2 at 0x7ffd5d1376e1 thread T0
#0 0x7fc6e4cc7bb1 in void put_epel_hv_fallback<unsigned short>(short*, long, unsigned short const*, long, int, int, int, int, short*, int) (/libde265/build/libde265/liblibde265.so+0x148bb1)#1 0x7fc6e4cf60de in acceleration_functions::put_hevc_epel_h(short*, long, void const*, long, int, int, int, int, short*, int) const (/libde265/build/libde265/liblibde265.so+0x1770de)#2 0x7fc6e4cf8ca2 in void mc_chroma<unsigned char>(base_context const*, seq_parameter_set const*, int, int, int, int, short*, int, unsigned char const*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x179ca2)#3 0x7fc6e4ce8e2e in generate_inter_prediction_samples(base_context*, slice_segment_header const*, de265_image*, int, int, int, int, int, int, int, PBMotion const*) (/libde265/build/libde265/liblibde265.so+0x169e2e)#4 0x7fc6e4cf590f in decode_prediction_unit(base_context*, slice_segment_header const*, de265_image*, PBMotionCoding const&, int, int, int, int, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x17690f)#5 0x7fc6e4d307e3 in read_prediction_unit(thread_context*, int, int, int, int, int, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b17e3)#6 0x7fc6e4d32469 in read_coding_unit(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b3469)#7 0x7fc6e4d33250 in read_coding_quadtree(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b4250)#8 0x7fc6e4d2a726 in read_coding_tree_unit(thread_context*) (/libde265/build/libde265/liblibde265.so+0x1ab726)#9 0x7fc6e4d339ea in decode_substream(thread_context*, bool, bool) (/libde265/build/libde265/liblibde265.so+0x1b49ea)#10 0x7fc6e4d3570f in read_slice_segment_data(thread_context*) (/libde265/build/libde265/liblibde265.so+0x1b670f)#11 0x7fc6e4c946d2 in decoder_context::decode_slice_unit_sequential(image_unit*, slice_unit*) (/libde265/build/libde265/liblibde265.so+0x1156d2)#12 0x7fc6e4c94ec1 in decoder_context::decode_slice_unit_parallel(image_unit*, slice_unit*) (/libde265/build/libde265/liblibde265.so+0x115ec1)#13 0x7fc6e4c93c0f in decoder_context::decode_some(bool*) (/libde265/build/libde265/liblibde265.so+0x114c0f)#14 0x7fc6e4c9393d in decoder_context::read_slice_NAL(bitreader&, NAL_unit*, nal_header&) (/libde265/build/libde265/liblibde265.so+0x11493d)#15 0x7fc6e4c9643e in decoder_context::decode_NAL(NAL_unit*) (/libde265/build/libde265/liblibde265.so+0x11743e)#16 0x7fc6e4c96ab3 in decoder_context::decode(int*) (/libde265/build/libde265/liblibde265.so+0x117ab3)#17 0x7fc6e4c7de95 in de265_decode (/libde265/build/libde265/liblibde265.so+0xfee95)#18 0x56089bc03bc9 in main (/libde265/build/dec265/dec265+0x6bc9)#19 0x7fc6e47afc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)#20 0x56089bc019b9 in _start (/libde265/build/dec265/dec265+0x49b9)
Address 0x7ffd5d1376e1 is located in stack of thread T0 at offset 9121 in frame
#0 0x7fc6e4cf83b8 in void mc_chroma<unsigned char>(base_context const*, seq_parameter_set const*, int, int, int, int, short*, int, unsigned char const*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1793b8)
This frame has 2 object(s):
[32, 9120) 'mcbuffer'<== Memory access at offset 9121 overflows this variable
[9152, 14512) 'padbuf'
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow (/libde265/build/libde265/liblibde265.so+0x148bb1) in void put_epel_hv_fallback<unsigned short>(short*, long, unsigned short const*, long, int, int, int, int, short*, int)
Shadow bytes around the buggy address:
0x10002ba1ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1ee90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1eea0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1eeb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1eec0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10002ba1eed0: 00 00 00 00 00 00 00 00 00 00 00 00[f2]f2 f2 f2
0x10002ba1eee0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1eef0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1ef10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10002ba1ef20: 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
==49284==ABORTING
Description
Stack-buffer-overflow (/libde265/build/libde265/liblibde265.so+0x148bb1) in void put_epel_hv_fallback(short*, long, unsigned short const*, long, int, int, int, int, short*, int)
Version
Replay
ASAN
POC
https://github.com/FDU-Sec/poc/blob/main/libde265/poc10-1
https://github.com/FDU-Sec/poc/blob/main/libde265/poc10-2
https://github.com/FDU-Sec/poc/blob/main/libde265/poc10-3
Environment
Credit
Peng Deng (Fudan University)
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