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Bug #60947 Segmentation fault while executing ibase_db_info
Submitted: 2012-02-01 10:39 UTC Modified: 2012-04-02 07:30 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: a dot lukyanov at hostcomm dot ru Assigned: mariuz (profile)
Status: Closed Package: InterBase related
PHP Version: Irrelevant OS: All
Private report: No CVE-ID: None
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 [2012-02-01 10:39 UTC] a dot lukyanov at hostcomm dot ru 
Description:
------------
All versions of PHP takes segmentation fault while executing ibase_db_info() function. I solved this problem and wrote patch. Please apply it.

Thanks.

Test script:
---------------
<?php

$resource = ibase_service_attach("localhost", "testvh11_fb1234", "fb1234");
echo ibase_db_info($resource, "testvh11_fb1234.fdb", IBASE_STS_HDR_PAGES);

?>

Expected result:
----------------
testvh1 public_html # ./php-5.2.17/sapi/cli/php test.php 
 
Database "/var/lib/firebird/testvh11_fb1234.fdb" 
Database header page information: 
	Flags			0 
	Checksum		12345 
	Generation		65 
	Page size		8192 
	ODS version		11.2 
	Oldest transaction	20 
	Oldest active		21 
	Oldest snapshot		21 
	Next transaction	26 
	Bumped transaction	1 
	Sequence number		0 
	Next attachment ID	38 
	Implementation ID	24 
	Shadow count		0 
	Page buffers		0 
	Next header page	0 
	Database dialect	3 
	Creation date		Jan 30, 2012 15:10:47 
	Attributes		force write 
 
    Variable header data: 
	*END* 
testvh1 public_html #

Actual result:
--------------
testvh1 public_html # php test.php 
Segmentation fault
testvh1 public_html #

Patches

ibase_db_info.patch (last revision 2012-02-01 10:41 UTC by a dot lukyanov at hostcomm dot ru)

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2012-03-02 05:29 UTC] mariuz@php.net
-Assigned To: +Assigned To: mariuz
 [2012-03-15 19:59 UTC] iliaa@php.net 
Automatic comment from SVN on behalf of iliaa
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=324281
Log: Fixed bug #60947 (Segmentation fault while executing ibase_db_info)
 [2012-03-15 19:59 UTC] iliaa@php.net
-Status: Assigned +Status: Closed
 [2012-03-15 19:59 UTC] iliaa@php.net 
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.
 [2012-03-16 21:17 UTC] a dot lukyanov at hostcomm dot ru 
I'm sorry, but current code in trunk not solved the problem.

Buffer increases on each iteration, because heap_p is bigger than heap_buf:

- snprintf(heap_p, heap_buf_size - (heap_buf - heap_p), "%s\n", result);
+ snprintf(heap_p, heap_buf_size - (heap_p - heap_buf), "%s\n", result);

This line should be corrected too:

- heap_p += line_len +2;
+ heap_p += line_len +1;

On each iteration I need overwrite last zero byte. In current code I recieve single line from Firebird server instead of multiline output (if not catch segfault).

Sorry for my bad English. Thanks.
 [2012-03-16 21:17 UTC] a dot lukyanov at hostcomm dot ru
-Status: Closed +Status: Assigned
 [2012-03-23 07:16 UTC] mariuz@php.net
-Status: Assigned +Status: Closed
 [2012-03-23 07:16 UTC] mariuz@php.net 
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.

iliaa fixed it in svn for all branches

Thanks
 [2012-03-23 07:19 UTC] mariuz@php.net
-Status: Closed +Status: Re-Opened
 [2012-04-02 07:30 UTC] mariuz@php.net 
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.
 [2012-04-02 07:30 UTC] mariuz@php.net
-Status: Re-Opened +Status: Closed
 [2012-04-18 09:45 UTC] laruence@php.net 
Automatic comment on behalf of iliaa
Revision: http://git.php.net/?p=php-src.git;a=commit;h=632825a4ff52710885201fe74998e436948f1e46
Log: Fixed bug #60947 (Segmentation fault while executing ibase_db_info)
 [2012-07-24 23:36 UTC] rasmus@php.net 
Automatic comment on behalf of iliaa
Revision: http://git.php.net/?p=php-src.git;a=commit;h=632825a4ff52710885201fe74998e436948f1e46
Log: Fixed bug #60947 (Segmentation fault while executing ibase_db_info)
 [2013-11-17 09:33 UTC] laruence@php.net 
Automatic comment on behalf of iliaa
Revision: http://git.php.net/?p=php-src.git;a=commit;h=632825a4ff52710885201fe74998e436948f1e46
Log: Fixed bug #60947 (Segmentation fault while executing ibase_db_info)
 
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