Synopsis: Moderate: binutils security, bug fix, and enhancement update
Advisory ID: SLSA-2015:2079-9
Issue Date: 2015-11-19
CVE Numbers: CVE-2014-8484
Multiple buffer overflow flaws were found in the libbdf library used by
various binutils utilities. If a user were tricked into processing a
specially crafted file with an application using the libbdf library, it
could cause the application to crash or, potentially, execute arbitrary
code. (CVE-2014-8485, CVE-2014-8501, CVE-2014-8502, CVE-2014-8503,
An integer overflow flaw was found in the libbdf library used by various
binutils utilities. If a user were tricked into processing a specially
crafted file with an application using the libbdf library, it could cause
the application to crash. (CVE-2014-8484)
A directory traversal flaw was found in the strip and objcopy utilities. A
specially crafted file could cause strip or objdump to overwrite an
arbitrary file writable by the user running either of these utilities.
This update fixes the following bugs:
* Binary files started by the system loader could lack the Relocation
Read-Only (RELRO) protection even though it was explicitly requested when
the application was built. This bug has been fixed on multiple
architectures. Applications and all dependent object files, archives, and
libraries built with an alpha or beta version of binutils should be
rebuilt to correct this defect.
* The ld linker on 64-bit PowerPC now correctly checks the output format
when asked to produce a binary in another format than PowerPC.
* An important variable that holds the symbol table for the binary being
debugged has been made persistent, and the objdump utility on 64-bit
PowerPC is now able to access the needed information without reading an
invalid memory region.
* Undesirable runtime relocations described in SLBA-2015:0974.
The update adds these enhancements:
* New hardware instructions of the IBM z Systems z13 are now supported by
assembler, disassembler, and linker, as well as Single Instruction,
Multiple Data (SIMD) instructions.
* Expressions of the form: “FUNC@localentry” to refer to the local entry
point for the FUNC function (if defined) are now supported by the PowerPC
assembler. These are required by the ELFv2 ABI on the little-endian
variant of IBM Power Systems.
– Scientific Linux Development Team