[Wayland-bugs] [Bug 94760] ASAN reports heap-buffer-overflow in terminal

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94760

            Bug ID: 94760
           Summary: ASAN reports heap-buffer-overflow in terminal
           Product: Wayland
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: weston
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: comicfans44 at gmail.com

hard to re-produce 
=================================================================
==1113==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60b00000876e
at pc 0x40e426 bp 0x7ffe02b09400 sp 0x7ffe02b093f0
READ of size 1 at 0x60b00000876e thread T0
    #0 0x40e425 in handle_special_char clients/terminal.c:1906
    #1 0x40e7a0 in handle_char clients/terminal.c:1952
    #2 0x4135f6 in terminal_data clients/terminal.c:2169
    #3 0x4135f6 in io_handler clients/terminal.c:3018
    #4 0x430f24 in display_run clients/window.c:5970
    #5 0x406184 in main clients/terminal.c:3106
    #6 0x7fa3092d959f in __libc_start_main (/lib64/libc.so.6+0x2059f)
    #7 0x406388 in _start (/usr/bin/weston-terminal+0x406388)

0x60b00000876e is located 0 bytes to the right of 110-byte region
[0x60b000008700,0x60b00000876e)
allocated by thread T0 here:
    #0 0x7fa30b2b4935 in calloc
(/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libasan.so.1+0x57935)
    #1 0x40fea7 in zalloc shared/zalloc.h:38
    #2 0x40fea7 in terminal_resize_cells clients/terminal.c:782
    #3 0x40fea7 in resize_handler clients/terminal.c:872

SUMMARY: AddressSanitizer: heap-buffer-overflow clients/terminal.c:1906
handle_special_char
Shadow bytes around the buggy address:
  0x0c167fff9090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c167fff90a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c167fff90b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c167fff90c0: fa fa fa fa fa fa fa fa fa fa 00 00 00 00 00 00
  0x0c167fff90d0: 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa fa
=>0x0c167fff90e0: 00 00 00 00 00 00 00 00 00 00 00 00 00[06]fa fa
  0x0c167fff90f0: fa fa fa fa fa fa 00 00 00 00 00 00 00 00 00 00
  0x0c167fff9100: 00 00 00 fa fa fa fa fa fa fa fa fa 00 00 00 00
  0x0c167fff9110: 00 00 00 00 00 00 00 00 00 fa fa fa fa fa fa fa
  0x0c167fff9120: fa fa 00 00 00 00 00 00 00 00 00 00 00 00 00 fa
  0x0c167fff9130: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
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
  Contiguous container OOB:fc
  ASan internal:           fe
==1113==ABORTING

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/wayland-bugs/attachments/20160330/bc32d800/attachment.html>