RHBA-2004:384 - Bug Fix Advisory

Topic

Updated glibc packages that address several bugs and implement some
enhancements are now available.

Description

The GNU libc packages (known as glibc) contain the standard C libraries
used by applications.

This errata fixes several bugs in the GNU C Library. The largest changes
are non-executable stack support on IA32 and AMD64 as well as several
fixes to the NPTL threading library.

Fixes include (in addition to enclosed Bugzilla entries):

• clock_settime error reporting fix
• LD_DEBUG=statistics on AMD64
• PPC64 umount fix
• ffsl fixes on some architectures
• memory handling corner-case fixes in many routines
• *scanf fixes
• fixed strpbrk macro in <string.h>
• sysctl.h fix
• S_I[SF]SOCK and F_[SG]ETOWN definition corretions with various feature

test macros

• sem_timedwait error reporting
• tgmath.h fix
• AMD64 makecontext fixes
• regex translate handling fix
• fix in handling of Elf_Rela undefined TLS symbols in the dynamic linker
• -z nodelete shared library handling fix
• nss_nis reentrancy fixes
• fix for setenv handling of invalid arguments
• Itanium/AMD64 backtrace fixes for statically linked programs
• xtrace script typo fix
• timer SIGEV_NONE handling
• FUTEX_CMP_REQUEUE support in NPTL has been reenabled
• __parse_one_specmb fix
• F_{GETLK,SETLK,SETLKW} fix for 32-bit LFS compilations on AMD64
• fix pmaplist destruction in sunrpc
• sqrt special values handling fix for IBM S/390 and S/390x
• fix pthread_rwlock_timed*lock and pthread_cond_timedwait invalid tv_nsec

handling

• only ship linuxthreads <bits/stdio-lock.h>
• speed up getaddrinfo by canonicalizing only first hostname with AI_CANONNAME
• make SHMLBA macro usable in C++ code
• fix pthread.h header for -std=c99 -D_XOPEN_SOURCE=600 compilation
• fix IPv6 AI_V4MAPPED filtering
• fix pow{,f,l} functions on IA-32 and x86-64
• fix some iconv modules
• fix memory handling in ifreq and loadavg
• mbsrtowcs can now handle src without zero termination
• memusage now handles big amounts of allocation data
• newlocale (3) locking fix
• NPTL pthread_rwlock_rdlock fix on IA-64, PowerPC and s390
• strtold fix
• fix for fread_unlocked and fwrite_unlocked macros

All users of glibc should upgrade to these updated packages, which
resolve these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

Affected Products

• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 117021 - iconv aborts conversion with '-c'
• BZ - 118518 - gmp inclusion of SSE2 optimized libs causes Illegal Instructions on non-Pentium systems
• BZ - 121606 - ELF file's phentsize not the expected size
• BZ - 123148 - performance defect of snprintf in glibc
• BZ - 125173 - Want to consistent i386-compatible binaries compiled x86_64
• BZ - 127328 - [PATCH] clock_gettime() acting buggy
• BZ - 128674 - iconv(3) causes SIGSEGV on specific input
• BZ - 129455 - nr_readers_queued is never decremented

CVEs

(none)

References

(none)