GCC Explorer - an interactive take on compilation
2012-05-24T13:23:00+00:00

Matt Godbolt announces GCC explorer, a web-based tool for exploring how code tweaks change the machine code emitted by the compiler. "Particularly with some of the newer features of C++11 — lambdas, move constructors, threading primitives etc — it’s nice to be able to see how your elegant code becomes beautiful (and maybe even fairly optimal) machine code." The GCC explorer code is on github for those who want to set up their own instance.

[$] LWN.net Weekly Edition for May 24, 2012
2012-05-24T01:24:34+00:00

The LWN.net Weekly Edition for May 24, 2012 is available.

Google wins patent case against Oracle
2012-05-23T18:22:40+00:00

Groklaw has the news: the jury in Oracle v. Google has found that Google did not infringe any of Oracle's patents.

Simon Phipps is the new OSI President (The H)
2012-05-23T17:54:33+00:00

The H covers an announcement by the Open Source Initiative that Simon Phipps is the new president of the organization. "Phipps has already been spearheading an OSI reform process, working with the rest of the board to open up the organisation. That process has led to the creation of Open Source Initiative affiliation, bringing the Apache Software Foundation, FreeBSD, Eclipse, Mozilla, Debian, and Creative Commons, along with other organisations, on board as affiliates. "There will be further developments in that scheme soon, and we'll have much more to announce in other areas as the year progresses" said Phipps by email."

Wednesday's security updates
2012-05-23T17:43:32+00:00

Mandriva has updated 2011.0: wireshark (denial of service).

Oracle has updated postgresql, postgresql84 (OL6; OL5: multiple vulnerabilities), OL5: postgresql (multiple vulnerabilities), OL5: kvm (multiple vulnerabilities), and OL6: bind-dyndb-ldap (denial of service).

Red Hat has updated RHEL5&6: flash-plugin (code execution).

SUSE has updated SLE10 SP4: openssl (exploitable vulnerabilities).

Ubuntu has updated 12.04: feedparser (denial of service).

LLVM 3.1 released
2012-05-23T15:00:23+00:00

Version 3.1 of the LLVM compiler suite is out. "This release represents approximately 6 months of development over LLVM 3.0, delivers a vast range of improvements and new features. Some of the most visible features include greatly expanded C++'11 support in Clang (including lambdas, initializer lists, constexpr, user-defined literals, and atomics); AddressSanitizer, a fast memory error detection tool which uses instrumentation to find bugs; "instruction bundles" support in the late code generator, allowing much better support for VLIW targets; an ARM integrated assembler which speeds up ARM compile time and enables new features for the ARM target; major enhancements to the MIPS backend (including support for MIPS64); a new port for the Qualcomm Hexagon VLIW processor, Python bindings, and much much more." See the release notes for details.

A Tale of Two Pwnies (Part 1)
2012-05-22T22:00:05+00:00

For those interested in complex exploits: the Chromium Blog describes how a sequence of six independent bugs was exploited to execute code within the Chromium browser. "Even though Chrome’s renderers execute inside a stricter sandbox than the GPU process, there is a special class of renderers that have IPC interfaces with elevated permissions. These renderers are not supposed to be navigable by web content, and are used for things like extensions and settings pages. However, Pinkie found another bug (117417) that allowed an unprivileged renderer to trigger a navigation to one of these privileged renderers, and used it to launch the extension manager. So, all he had to do was jump on the extension manager’s IPC channel before it had a chance to connect."

Mageia 2 is out
2012-05-22T21:10:48+00:00

Mageia 2 has been released. "Mageia 2 is available as Live CDs, install DVDs and a netinstall CD, and is available in various languages for easy download, from FTP, HTTP, or torrents." The release notes are here. LWN previewed this release last April.

Stable kernel 2.6.34.12
2012-05-22T21:10:37+00:00

Paul Gortmaker has released stable kernel 2.6.34.12. If you are running a 2.6.34.x kernel you'll want this release.

[$] A uTouch architecture introduction
2012-05-22T19:50:36+00:00

As the Linux desktop increases in popularity, the user interface experience has become increasingly important. For example, most laptops today have multitouch capabilities that have yet to be fully exposed and exploited in the free software ecosystem. Soon we will be carrying around multitouch tablets with a traditional Linux desktop or similar foundation. In order to provide a high-quality and rich experience we must fully exploit multitouch gestures. The uTouch stack developed by Canonical aims to provide a foundation for gestures on the Linux desktop.

Click below (subscribers only) for an overview of the architecture of uTouch contributed by uTouch hacker Chase Douglas.

Security advisories for Tuesday
2012-05-22T17:47:11+00:00

CentOS has updated C5: kvm (multiple vulnerabilities), C5: postgresql (multiple vulnerabilities), C5: postgresql84 (multiple vulnerabilities), C6: postgresql (multiple vulnerabilities), and C6: bind-dyndb-ldap (denial of service).

Fedora has updated perl-config-inifiles (F16; F15: insecure temporary files) and F16: moodle (many vulnerabilities).

Oracle has updated enterprise kernel (OL6; OL5: denial of service), enterprise kernel (OL6; OL5: denial of service), and OL6: kernel (denial of service).

Red Hat has updated RHEL5: kvm (multiple vulnerabilities), RHEL5: postgresql (multiple vulnerabilities), RHEL5: postgresql84 & RHEL6: postgresql (multiple vulnerabilities), and RHEL6: bind-dyndb-ldap (denial of service).

Scientific Linux has updated SL5: kvm (multiple vulnerabilities), SL5: postgresql (multiple vulnerabilities), SL5: postgresql84 & SL6: postgresql (multiple vulnerabilities), and SL6: bind-dyndb-ldap (denial of service).

Ubuntu has updated libxml2 (code execution) and 12.04: kernel (multiple vulnerabilities).

ownCloud 4 released
2012-05-22T13:40:48+00:00

Version 4 of the ownCloud "personal cloud" system is out. "ownCloud 4 – built through active community support – adds innovative features like file versioning, – which actively saves files, allowing users to "rollback" to previous versions – and a new API — giving developers an easy, stable and supported way to develop applications on top of ownCloud capabilities." It also adds support for direct opening of ODF documents and mounting of external filesystems like Dropbox or an FTP server. See the release announcement for more information.

Announcing printerd
2012-05-22T13:25:29+00:00

Tim Waugh has announced (on May 10) the existence of the printerd project, meant to be a new print spooling subsystem for Linux. "It is a polkit-enabled D-Bus system service, written using the GLib object system. Although modeled on concepts from IPP (Internet Printing Protocol), printerd is not in itself an IPP server. Its only interface is D-Bus, although the aim is to be able to implement an IPP server on top of the D-Bus API as a separate process. Having a D-Bus interface means that applications wanting to print automatically get to use printerd asynchronously."

Stable kernels 3.0.32 and 3.3.7
2012-05-21T21:15:29+00:00

Greg KH has released stable kernels 3.0.32 and 3.3.7. Both contain lots of important fixes.

Nmap 6 released
2012-05-21T20:50:03+00:00

Version 6 of the nmap network scanner is out. "It includes a more powerful Nmap Scripting Engine, 289 new scripts, better web scanning, full IPv6 support, the Nping packet prober, faster scans, and much more." See the release notes for details.