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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
ASAN info:
yasm: file name already has no extension: output will be in `yasm.out'
ASAN:SIGSEGV
=================================================================
==10834==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000010 (pc 0x7fdb4c7eafb3 bp 0x7fff7a57d890 sp 0x7fff7a57d840 T0)
#0 0x7fdb4c7eafb2 in yasm_expr__copy_except test/yasm-uaf/SRC_asan/libyasm/expr.c:999
#1 0x7fdb4908fad6 in nasm_parser_directive test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:1584
#2 0x7fdb4909bd3c in parse_line test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:377
#3 0x7fdb4909bd3c in nasm_parser_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:231
#4 0x7fdb4908f36b in nasm_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:66
#5 0x7fdb4908f36b in nasm_parser_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:83
#6 0x402c84 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:521
#7 0x402c84 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#8 0x7fdb4c21382f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#9 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/libyasm/expr.c:999 yasm_expr__copy_except
==10834==ABORTINGMetadata
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