glibc/glibc-fix-double-loopback.diff

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This fixes the problem of getent ahosts localhost returning 127.0.0.1
_twice_ on systems that have no ipv6 interfaces up (hence are regarded
as ipv4 only by the lookup code), but still have localhost entries for
::1 and 127.0.0.1 in /etc/hosts (like most current systems).
Remapping ::1 to 127.0.0.1 is bogus when /etc/hosts is correct.
bnc #684534, #606980
http://sources.redhat.com/bugzilla/show_bug.cgi?id=4980
Accepting request 186119 from home:Andreas_Schwab:glibc - Update to glibc 2.17.90 85891acadf1b: * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal has been fixed by disabling the use of pt_chown (Bugzilla #15755). Distributions can re-enable building and using pt_chown via the new configure option `--enable-pt_chown'. Enabling the use of pt_chown carries with it considerable security risks and should only be used if the distribution understands and accepts the risks. * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla #15078). * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been fixed (Bugzilla #15330). * Add support for calling C++11 thread_local object destructors on thread and program exit. This needs compiler support for offloading C++11 destructor calls to glibc. * Improved worst case performance of libm functions with double inputs and output. * Support for priority inherited mutexes in pthread condition variables on non-x86 architectures. * Optimized string functions for AArch64. Implemented by Marcus Shawcroft. * Optimized string functions for ARM. Implemented by Will Newton and Richard Henderson. * Added a benchmark framework to track performance of functions in glibc. * New <math.h> macro named issignaling to check for a signaling NaN (sNaN). It is based on draft TS 18661 and currently enabled as a GNU extension. * On Linux, the clock function now uses the clock_gettime system call for improved precision, rather than old times system call. * Added new API functions pthread_getattr_default_np and pthread_setattr_default_np to get and set the default pthread attributes of a process. * Added support for TSX lock elision for pthread mutexes on i386 and x86-64. OBS-URL: https://build.opensuse.org/request/show/186119 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=304
2013-08-06 16:52:55 +02:00
Index: glibc-2.17.90/nss/nss_files/files-hosts.c
===================================================================
Accepting request 186119 from home:Andreas_Schwab:glibc - Update to glibc 2.17.90 85891acadf1b: * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal has been fixed by disabling the use of pt_chown (Bugzilla #15755). Distributions can re-enable building and using pt_chown via the new configure option `--enable-pt_chown'. Enabling the use of pt_chown carries with it considerable security risks and should only be used if the distribution understands and accepts the risks. * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla #15078). * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been fixed (Bugzilla #15330). * Add support for calling C++11 thread_local object destructors on thread and program exit. This needs compiler support for offloading C++11 destructor calls to glibc. * Improved worst case performance of libm functions with double inputs and output. * Support for priority inherited mutexes in pthread condition variables on non-x86 architectures. * Optimized string functions for AArch64. Implemented by Marcus Shawcroft. * Optimized string functions for ARM. Implemented by Will Newton and Richard Henderson. * Added a benchmark framework to track performance of functions in glibc. * New <math.h> macro named issignaling to check for a signaling NaN (sNaN). It is based on draft TS 18661 and currently enabled as a GNU extension. * On Linux, the clock function now uses the clock_gettime system call for improved precision, rather than old times system call. * Added new API functions pthread_getattr_default_np and pthread_setattr_default_np to get and set the default pthread attributes of a process. * Added support for TSX lock elision for pthread mutexes on i386 and x86-64. OBS-URL: https://build.opensuse.org/request/show/186119 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=304
2013-08-06 16:52:55 +02:00
--- glibc-2.17.90.orig/nss/nss_files/files-hosts.c
+++ glibc-2.17.90/nss/nss_files/files-hosts.c
@@ -68,11 +68,6 @@ LINE_PARSER
{
if (IN6_IS_ADDR_V4MAPPED (entdata->host_addr))
memcpy (entdata->host_addr, entdata->host_addr + 12, INADDRSZ);
- else if (IN6_IS_ADDR_LOOPBACK (entdata->host_addr))
- {
- in_addr_t localhost = htonl (INADDR_LOOPBACK);
- memcpy (entdata->host_addr, &localhost, sizeof (localhost));
- }
else
/* Illegal address: ignore line. */
return 0;