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Description
System info:
Ubuntu 16.04.6 LTS, X64, gcc 5.4.0, yasm (latest master 009450c)
I think it is probably a similar issue as #83
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
=================================================================
==12603==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f421b49db7e bp 0x7ffc83d244d0 sp 0x7ffc83d244c0 T0)
#0 0x7f421b49db7d in yasm_expr_get_intnum test/yasm-uaf/SRC_asan/libyasm/expr.c:1263
#1 0x7f421b487b9e in bc_align_finalize test/yasm-uaf/SRC_asan/libyasm/bc-align.c:108
#2 0x7f421b48c6ee in yasm_bc_finalize test/yasm-uaf/SRC_asan/libyasm/bytecode.c:176
#3 0x7f421b4b9bd2 in yasm_object_finalize test/yasm-uaf/SRC_asan/libyasm/section.c:528
#4 0x402ca9 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:527
#5 0x402ca9 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#6 0x7f421aeba82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#7 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:1263 yasm_expr_get_intnum
==12603==ABORTINGMetadata
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