[Bug binutils/25360] New: memory leak in readelf, get_data

[featherrain26 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25360

            Bug ID: 25360
           Summary: memory leak in readelf, get_data
           Product: binutils
           Version: 2.32
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: featherrain26 at gmail dot com
  Target Milestone: ---

Created attachment 12181
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12181&action=edit
POC file

Hi, there.

There is a memory leak in file binutils/readelf.c, get_data function.

Here is the reproducing environment and procedure:

Distributor ID: Ubuntu
Description:    Ubuntu 16.04.6 LTS
Release:        16.04
Codename:       xenial
gcc:            5.4.0

compilation:
CFLAGS="-fsanitize=address,undefined" ./configure

./readelf -agteSdcWw --dyn-syms -D poc


Here is the error message:

=================================================================
==15608==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 69 byte(s) in 1 object(s) allocated from:
    #0 0x7ffff6f02602 in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x40b2a1 in get_data
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x40b2a1)
    #2 0x478a80 in process_notes_at
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x478a80)
    #3 0x47961f in process_corefile_note_segments
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47961f)
    #4 0x47a0f6 in process_note_sections
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47a0f6)
    #5 0x47a195 in process_notes
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47a195)
    #6 0x47c930 in process_object
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47c930)
    #7 0x47e950 in process_file
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47e950)
    #8 0x47ecd1 in main
(/playground/playground/binutils-2.32-r/binutils-2.32/binutils/readelf+0x47ecd1)
    #9 0x7ffff5db382f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

SUMMARY: AddressSanitizer: 69 byte(s) leaked in 1 allocation(s).

Regards,

-- 
You are receiving this mail because:
You are on the CC list for the bug.