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Description
System info:
Ubuntu 16.04.6 LTS, X64, gcc 5.4.0, yasm (latest master 009450c)
Compile Command:
$ ./autogen.sh
make distclean
CC=gcc CXX=g++ CFLAGS="-fsanitize=address -fno-omit-frame-pointer -g" CXXFLAGS="-fsanitize=address -fno-omit-frame-pointer -g" ./configure --prefix=$PWD/build --disable-shared
make -j
make install
Run Command:
$ yasm $POC
POC file:
https://github.com/Clingto/POC/blob/master/MSA/yasm/yasm-3811-find_cc-null-pointer-deref
ASAN info:
yasm: file name already has no extension: output will be in `yasm.out'
ASAN:SIGSEGV
=================================================================
==14891==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000018 (pc 0x7f8500dab0e4 bp 0x7ffc37b91380 sp 0x7ffc37b91340 T0)
#0 0x7f8500dab0e3 in find_cc test/yasm-uaf/SRC_asan/modules/preprocs/nasm/nasm-pp.c:3815
#1 0x7f8500db0692 in expand_mmac_params test/yasm-uaf/SRC_asan/modules/preprocs/nasm/nasm-pp.c:3986
#2 0x7f8500dc08e8 in pp_getline test/yasm-uaf/SRC_asan/modules/preprocs/nasm/nasm-pp.c:5078
#3 0x7f8500da9d46 in nasm_preproc_get_line test/yasm-uaf/SRC_asan/modules/preprocs/nasm/nasm-preproc.c:198
#4 0x7f8500d9b2ac in nasm_parser_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:218
#5 0x7f8500d8f36b in nasm_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:66
#6 0x7f8500d8f36b in nasm_parser_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:83
#7 0x402c84 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:521
#8 0x402c84 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#9 0x7f8503f0482f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#10 0x403ee8 in _start ( test/yasm-uaf/bin_asan/bin/yasm+0x403ee8)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV test/yasm-uaf/SRC_asan/modules/preprocs/nasm/nasm-pp.c:3815 find_cc
==14891==ABORTINGMetadata
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