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Re: out-of-bounds read / crash in elfutils tools (readelf, nm, ...) with malformed file

Am Thu, 13 Nov 2014 15:45:26 +0100
schrieb Mark Wielaard <>:

> I pushed this now to master as attached.

still crashes readelf -a in

Program received signal SIGSEGV, Segmentation fault.
0xf7d96112 in vfprintf () from /lib32/
(gdb) bt
#0  0xf7d96112 in vfprintf () from /lib32/
#1  0xf7d9c5c8 in printf () from /lib32/
#2  0x0805163c in handle_symtab (ebl=0x8078b58, scn=0x807a140,
shdr=0xffffca5c) at readelf.c:2245
#3  0x08050fbb in print_symtab (ebl=0x8078b58, type=2) at readelf.c:2139
#4  0x0804cb06 in process_elf_file (dwflmod=0x80789e8, fd=3) at
readelf.c:887 #5  0x0804c1f4 in process_dwflmod (dwflmod=0x80789e8,
userdata=0x80789f0, name=0x8078af8
"id:000116,src:000000,op:flip32,pos:5554", base=134512640,
arg=0xffffcc8c) at readelf.c:691 #6  0xf7f38be4 in dwfl_getmodules ()
from /usr/lib32/ #7  0x0804c66a in process_file (fd=3, 
    fname=0xffffcfe6 "id:000116,src:000000,op:flip32,pos:5554",
only_one=true) at readelf.c:790
#8  0x0804b13f in main (argc=3, argv=0xffffce04) at readelf.c:296

Hanno Böck


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