The GNU Debugger (GDB) allows debugging of programs written in C, C++,
Java, and other languages by executing them in a controlled fashion and
then printing out their data.
GDB tried to auto-load certain files (such as GDB scripts, Python scripts,
and a thread debugging library) from the current working directory when
debugging programs. This could result in the execution of arbitrary code
with the userโs privileges when GDB was run in a directory that has
untrusted content. (CVE-2011-4355)
With this update, GDB no longer auto-loads files from the current directory
and only trusts certain system directories by default. The list of trusted
directories can be viewed and modified using the โshow auto-load safe-pathโ
and โset auto-load safe-pathโ GDB commands. Refer to the GDB manual, linked
to in the References, for further information.
This update also fixes the following bugs:
When a struct member was at an offset greater than 256 MB, the resulting
bit position within the struct overflowed and caused an invalid memory
access by GDB. With this update, the code has been modified to ensure that
GDB can access such positions. (BZ#795424)
When a thread list of the core file became corrupted, GDB did not print
this list but displayed the โCannot find new threads: generic errorโ error
message instead. With this update, GDB has been modified and it now prints
the thread list of the core file as expected. (BZ#811648)
GDB did not properly handle debugging of multiple binaries with the
same build ID. This update modifies GDB to use symbolic links created for
particular binaries so that debugging of binaries that share a build ID
now proceeds as expected. Debugging of live programs and core files is
now more user-friendly. (BZ#836966)
All users of gdb are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
RedHat | 6 | s390x | gdb | <ย 7.2-60.el6 | gdb-7.2-60.el6.s390x.rpm |
RedHat | 6 | x86_64 | gdb | <ย 7.2-60.el6 | gdb-7.2-60.el6.x86_64.rpm |
RedHat | 6 | ppc64 | gdb-gdbserver | <ย 7.2-60.el6 | gdb-gdbserver-7.2-60.el6.ppc64.rpm |
RedHat | 6 | s390x | gdb-gdbserver | <ย 7.2-60.el6 | gdb-gdbserver-7.2-60.el6.s390x.rpm |
RedHat | 6 | i686 | gdb-debuginfo | <ย 7.2-60.el6 | gdb-debuginfo-7.2-60.el6.i686.rpm |
RedHat | 6 | ppc64 | gdb-debuginfo | <ย 7.2-60.el6 | gdb-debuginfo-7.2-60.el6.ppc64.rpm |
RedHat | 6 | i686 | gdb | <ย 7.2-60.el6 | gdb-7.2-60.el6.i686.rpm |
RedHat | 6 | src | gdb | <ย 7.2-60.el6 | gdb-7.2-60.el6.src.rpm |
RedHat | 6 | ppc64 | gdb | <ย 7.2-60.el6 | gdb-7.2-60.el6.ppc64.rpm |
RedHat | 6 | x86_64 | gdb-debuginfo | <ย 7.2-60.el6 | gdb-debuginfo-7.2-60.el6.x86_64.rpm |