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[Bug gdb/18948] New: Use after Free in _initialize_python
- From: "blackzver at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Thu, 10 Sep 2015 14:20:34 +0000
- Subject: [Bug gdb/18948] New: Use after Free in _initialize_python
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=18948
Bug ID: 18948
Summary: Use after Free in _initialize_python
Product: gdb
Version: 7.9
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: blackzver at gmail dot com
Target Milestone: ---
â Bin git:(master) â LD_PRELOAD=/usr/lib64/libasan.so.2.0.0 gdb
./blabla_compiled_with_san_analyzer
=================================================================
==12238==ERROR: AddressSanitizer: heap-use-after-free on address 0x610000007e40
at pc 0x7f3d6758b6b5 bp 0x7ffd35343ad0 sp 0x7ffd35343278
READ of size 2 at 0x610000007e40 thread T0
#0 0x7f3d6758b6b4 (/usr/lib64/libasan.so.2.0.0+0x516b4)
#1 0x567f92 in _initialize_python (/usr/bin/gdb+0x567f92)
#2 0x747748 in initialize_all_files (/usr/bin/gdb+0x747748)
#3 0x70c8e8 in gdb_init (/usr/bin/gdb+0x70c8e8)
#4 0x63d33b (/usr/bin/gdb+0x63d33b)
#5 0x6399f4 in catch_errors (/usr/bin/gdb+0x6399f4)
#6 0x63e41a in gdb_main (/usr/bin/gdb+0x63e41a)
#7 0x466b34 in main (/usr/bin/gdb+0x466b34)
#8 0x7f3d647306ff in __libc_start_main (/lib64/libc.so.6+0x206ff)
#9 0x466b78 in _start (/usr/bin/gdb+0x466b78)
0x610000007e40 is located 0 bytes inside of 181-byte region
[0x610000007e40,0x610000007ef5)
freed by thread T0 here:
#0 0x7f3d675d270a in __interceptor_free
(/usr/lib64/libasan.so.2.0.0+0x9870a)
#1 0x7f3d6473ab95 in setlocale (/lib64/libc.so.6+0x2ab95)
previously allocated by thread T0 here:
#0 0x7f3d675d2a0a in malloc (/usr/lib64/libasan.so.2.0.0+0x98a0a)
#1 0x7f3d6473a24d in new_composite_name (/lib64/libc.so.6+0x2a24d)
SUMMARY: AddressSanitizer: heap-use-after-free ??:0 ??
Shadow bytes around the buggy address:
0x0c207fff8f70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05
0x0c207fff8f80: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c207fff8f90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06
0x0c207fff8fa0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c207fff8fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05
=>0x0c207fff8fc0: fa fa fa fa fa fa fa fa[fd]fd fd fd fd fd fd fd
0x0c207fff8fd0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa
0x0c207fff8fe0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c207fff8ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c207fff9000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c207fff9010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
==12238==ABORTING
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