[Nasm-bugs] [Bug 3392671] heap-use-after-free in asm/preproc.c:4025

noreply-nasm at dev.nasm.us noreply-nasm at dev.nasm.us
Wed May 27 19:41:07 PDT 2020


https://bugzilla.nasm.us/show_bug.cgi?id=3392671

puppet at zju.edu.cn changed:

           What    |Removed                     |Added
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                 CC|                            |puppet at zju.edu.cn

--- Comment #1 from puppet at zju.edu.cn ---
The bug becomes memory leaks on 2.15rc1. 

The ASAN logs are as follows:

==57154==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000090 (pc
0x00000044196e bp 0x7fffffffdef0 sp 0x7fffffffdd50 T0)
    #0 0x44196d in expand_mmac_params asm/preproc.c:4769
    #1 0x448f14 in pp_tokline asm/preproc.c:6362
    #2 0x4493e7 in pp_getline asm/preproc.c:6429
    #3 0x408fb9 in assemble_file asm/nasm.c:1630
    #4 0x404bcd in main asm/nasm.c:637
    #5 0x7ffff6ac082f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #6 0x402378 in _start (/data3/ASAN/nasm-ac30bd6/nasm+0x402378)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV asm/preproc.c:4769 expand_mmac_params
==57154==ABORTING

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