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glibc/glibc-fix-double-loopback.diff
Andreas Schwab 746e16d2b9 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 14:52:55 +00:00

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Diff

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
Index: glibc-2.17.90/nss/nss_files/files-hosts.c
===================================================================
--- 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;