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Prevent stringpool damage leading to memory leaks (bug #974048).

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Resolves: rhbz#974048
This commit is contained in:
Tim Waugh 2013-06-13 11:58:55 +01:00
parent 131a54ac1c
commit 1e7802c0b0
2 changed files with 71 additions and 2 deletions
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64
cups-stringpool-setprinterattr.patch Normal file
View File

@ -0,0 +1,64 @@
diff -up cups-1.5.4/scheduler/printers.c.stringpool-setprinterattr cups-1.5.4/scheduler/printers.c
--- cups-1.5.4/scheduler/printers.c.stringpool-setprinterattr 2013-06-13 10:40:43.607590350 +0100
+++ cups-1.5.4/scheduler/printers.c 2013-06-13 10:53:31.134919727 +0100
@@ -2053,6 +2053,7 @@ cupsdSetPrinterAttr(
ipp_attribute_t *attr; /* Attribute */
int i, /* Looping var */
count; /* Number of values */
+ char *value_dup; /* Copy of attribute value string */
char *ptr, /* Pointer into value */
*start, /* Start of value */
quote; /* Quote character */
@@ -2121,16 +2122,24 @@ cupsdSetPrinterAttr(
return;
}
- for (i = 0; i < count; i ++)
+ if ((value_dup = strdup(value)) == NULL)
{
- if ((ptr = strchr(value, ',')) != NULL)
+ cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to copy attribute value.");
+ return;
+ }
+
+ for (i = 0, start = value_dup; i < count; i ++)
+ {
+ if ((ptr = strchr(start, ',')) != NULL)
*ptr++ = '\0';
- attr->values[i].integer = strtol(value, NULL, 10);
+ attr->values[i].integer = strtol(start, NULL, 10);
if (ptr)
- value = ptr;
+ start = ptr;
}
+
+ free(value_dup);
}
else
{
@@ -2171,7 +2180,13 @@ cupsdSetPrinterAttr(
return;
}
- for (i = 0, quote = '\0', ptr = value; i < count; i ++)
+ if ((value_dup = strdup(value)) == NULL)
+ {
+ cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to copy attribute value.");
+ return;
+ }
+
+ for (i = 0, quote = '\0', ptr = value_dup; i < count; i ++)
{
for (start = ptr; *ptr; ptr ++)
{
@@ -2199,6 +2214,8 @@ cupsdSetPrinterAttr(
attr->values[i].string.text = _cupsStrAlloc(start);
}
+
+ free(value_dup);
}
}

9
cups.spec
View File

@ -12,7 +12,7 @@
Summary: Common Unix Printing System
Name: cups
Version: 1.5.4
Release: 27%{?dist}
Release: 28%{?dist}
License: GPLv2
Group: System Environment/Daemons
Source: http://ftp.easysw.com/pub/cups/%{version}/cups-%{version}-source.tar.bz2
@ -79,13 +79,13 @@ Patch43: cups-str4194.patch
Patch44: cups-r10638.patch
Patch45: cups-r10642.patch
Patch46: cups-str4190.patch
Patch47: cups-str4223.patch
Patch48: cups-str4125.patch
Patch49: cups-str4140.patch
Patch50: cups-str4187.patch
Patch51: cups-str4205.patch
Patch52: cups-stringpool-setprinterattr.patch
Patch100: cups-lspp.patch
@ -346,6 +346,8 @@ Sends IPP requests to the specified URI and tests and/or displays the results.
%patch50 -p1 -b .str4187
# Don't set auth-info-required all of the time (STR #4205)
%patch51 -p1 -b .str4205
# Prevent stringpool damage leading to memory leaks (bug #974048).
%patch52 -p1 -b .stringpool-setprinterattr
%if %lspp
# LSPP support.
@ -763,6 +765,9 @@ rm -f %{cups_serverbin}/backend/smb
%{_mandir}/man5/ipptoolfile.5.gz
%changelog
* Thu Jun 13 2013 Tim Waugh <twaugh@redhat.com> 1:1.5.4-28
- Prevent stringpool damage leading to memory leaks (bug #974048).
* Tue Apr 23 2013 Tim Waugh <twaugh@redhat.com> 1:1.5.4-27
- dnssd backend: don't crash if avahi gives a callback with no TXT
record (bug #927040).