Bug 128674 - iconv(3) causes SIGSEGV on specific input
iconv(3) causes SIGSEGV on specific input
Product: Fedora
Classification: Fedora
Component: glibc (Show other bugs)
i586 Linux
medium Severity high
: ---
: ---
Assigned To: Jakub Jelinek
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2004-07-27 16:19 EDT by Boleslaw Ciesielski
Modified: 2007-11-30 17:10 EST (History)
0 users

See Also:
Fixed In Version: 2.3.3-42
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2004-08-12 04:44:12 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
test case (488 bytes, text/plain)
2004-07-27 16:23 EDT, Boleslaw Ciesielski
no flags Details

  None (edit)
Description Boleslaw Ciesielski 2004-07-27 16:19:09 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET 
CLR 1.1.4322)

Description of problem:
The following C program causes SIGSEGV inside the iconv(3) call:

#include <stdio.h>
#include <wchar.h>
#include <iconv.h>

int main()
  wchar_t inbuf[16] = { 0x10000, 0, };
  char outbuf[16] = { 0, };
  char *in_ptr = (char *) inbuf;
  size_t in_size = sizeof(wchar_t);
  char *out_ptr = outbuf;
  size_t out_size = sizeof outbuf;

  iconv_t enc = iconv_open("ibm943", "UCS-4LE");
  int n = iconv(enc, &in_ptr, &in_size, &out_ptr, &out_size);
  printf("n = %d  in_size = %d  out_size = %d\n", n, in_size, 

  return 0;

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. gcc -o iconv_bug iconv_bug.c
2. ./iconv_bug

Actual Results:  Program terminated with SIGSEGV

Expected Results:  n = 0  in_size = 0  out_size = 14

(the particular numbers are not important)

Additional info:

There is a similar case with character 0x10001 and "ibm932" (instead 
of 0x10000 and "ibm943")
Comment 1 Boleslaw Ciesielski 2004-07-27 16:23:22 EDT
Created attachment 102240 [details]
test case
Comment 3 Jakub Jelinek 2004-08-12 04:44:12 EDT
Should be fixed in glibc-2.3.3-42.
Comment 4 Jay Turner 2004-09-02 01:57:34 EDT
An errata has been issued which should help the problem 
described in this bug report. This report is therefore being 
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, 
please follow the link below. You may reopen this bug report 
if the solution does not work for you.


Note You need to log in before you can comment on or make changes to this bug.