https://sourceware.org/bugzilla/show_bug.cgi?id=28174
Bug ID: 28174
Summary: Segment fault due to null pointer dereference in
`nm-new -l`
Product: binutils
Version: 2.38 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: shaohua.li at inf dot ethz.ch
Target Milestone: ---
Created attachment 13584
--> https://sourceware.org/bugzilla/attachment.cgi?id=13584&action=edit
poc
Hi there,
I crashed `nm-new -l` with a fuzzer, which is due to a null pointer dereference
in nm.c.
- binutils version: 2.38(Head), commit af51804103a08cd1e12edc4f4a30eec2c5c4f9e8
- Compiler: clang12
- Platform: Ubuntu 18.04.5 LTS, x86_64
- Reproduce: run `nm-new -l poc`
AddressSanitizer report:
==629==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x0000004d1633 bp
0x7fff255c6aa0 sp 0x7fff255c6540 T0)
==629==The signal is caused by a READ memory access.
==629==Hint: this fault was caused by a dereference of a high value address
(see register values below). Disassemble the provided pc to learn which
register was used.
#0 0x4d1633 in print_symbol /binutils_latest/repo/binutils/nm.c:1052:13
#1 0x4ceaeb in print_symbols /binutils_latest/repo/binutils/nm.c:1152:7
#2 0x4cd23c in display_rel_file /binutils_latest/repo/binutils/nm.c:1279:5
#3 0x4c97dd in display_file /binutils_latest/repo/binutils/nm.c:1446:7
#4 0x4c90db in main /binutils_latest/repo/binutils/nm.c:1965:12
#5 0x7fb64a4e40b2 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
#6 0x41c55d in _start (/out_bin/nm-new+0x41c55d)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /binutils_latest/repo/binutils/nm.c:1052:13 in
print_symbol
==629==ABORTING
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