Showing posts with label Kernel. Show all posts
Showing posts with label Kernel. Show all posts

Wednesday, April 3, 2013

Linux Kernel 3.6.7 run and Install it on Ubuntu/Linux Mint

 
 
Here we come to the issue of seventh version maintenance of the family of kernel 3.6, version 3.6.7 . We arrived in a very short time, well seven maintenance releases of the family 3.6.! Apparently the problems never end, and it is essential to update the kernel to avoid running into bugs found in previous versions. In all cases, the update 3.6.7 brings significant improvements in audio handling (ALSA), in particular USB sound cards. We see, also, to solve some annoying bugs that plagued the Radeon drivers and XFS filesystem.

This is following the news, you can also consult the page on the full changelog :

  • ALSA: usb-audio: Fix mutex deadlock at disconnection
  • ALSA: Fix refcount unbalance card
  • ALSA: usb-audio: Fix races at disconnection
  • DRM / Radeon: Fix legacy on primary DAC Load Detection.
  • xfs: fix buffer shudown reference count mismatch
  • xfs: fix reading of wrapped log data
  • cfg80211: fix antenna gain handling
  • drm / vmwgfx: Fix a case where the code would BUG When trying to pin GMR memory
  • drm / vmwgfx: Fix hibernation device reset
  • mmc: sdhci: fix NULL dereference in sdhci_request () tuning
  • l2tp: fix oops in l2tp_eth_create () error path
  • net: usb: Fix memory leak on Tx data path
  • net: fix SecPath kmemleak
  • tcp: fix FIONREAD / SIOCINQ
  • ipv4: Fix flushing of cached routing informations
  • sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter ()
  • batman-adv: Fix broadcast packet CRC calculation
  • NFS: fix bug in legacy DNS resolver.
  • mac80211: fix IBSS SSID copy on JOIN
  • drm/i915: fix overlay on i830M

Install Linux Kernel 3.6.7 on Ubuntu

If you want to easily and quickly install the new kernel on your Ubuntu (12.10/12.04/11.10 the recommended versions), my advice is to rely script found below. That’s all you have to do! Open a terminal and type:

cd / tmp wget
http://dl.dropbox.com/u/47950494/upubuntu.com/linux -kernel-3.6.7-O linux-kernel-3.6.7
chmod x + linux-kernel-3.6.7
sudo sh linux-kernel-3.6.7


Now reboot the system and verify that the version is actually 3.6.6 using the command:
uname-r
As usual, in case you want to remove the new kernel, just follow this guide .
WARNING : If you have any problems (like black screen) and you have an Nvidia card, open a terminal emergency (beating Keyboard ALT + CTRL + F1 , or F2 … up to F8) and type the following commands:
cd / usr/src/linux-headers-3.6.7-030607/arch/x86/include
sudo cp -v generated / asm / unistd *. / asm

Of course, the path to you might be a little different (if, for example, you have a 64, the x86 bit from the previous command could become x86_64).
NB: after installing the new kernel, the possibility exists that some drivers (eg. video and wireless) stop working . It’s all about uninstalling and then reinstalling before rebooting the system (you may find yourself unable to use the graphical interface or the wireless network) or using an old kernel .

Monday, February 25, 2013

Superb Mini Server 2.0.3



Superb Mini Server (SMS) 2.0.3, an updated build of the Slackware-based distribution for servers, has been released: "Superb Mini Server version 2.0.3 released (Linux kernel 3.4.33). It's that time again, this release feature the latest long-term support kernel 3.4.33, along with the latest stable releases of server packages, such as Postfix 2.10.0, Samba 4.0.3, Dovecot 2.1.15, MySQL 5.5.30, PHP 5.3.22. New packages in this release are: Heimdal, a Kerberos 5 implementation; Avahi, a Zeroconf implementation; libdaemon moved from /extra/avahi to main distribution; ConsoleKit, Polkit and libatasmart to fully support udisks; cifs-utils which split from the Samba package; elilo, an EFI linux bootloader (the installer doesn't have support for elilo); xhost, a server access control program for X. New packages on the extra ISO image are MariaDB, a drop-in replacement for MySQL and a built of CUPS with PAM support. SMS 2.0.3 features by default the long awaited Samba 4." Read the rest of the release announcement for more details. Download: SMS64.Native.CD-2.0.3-Install.iso (675MB, MD5).

Monday, February 4, 2013

Install/Upgrade to Linux Kernel 3.7.6 in Ubuntu/Linux Mint



Linux Kernel 3.7.6 is the sixth maintenance release of the kernel 3.7 series that brings more improvements and various bug fixes. The installation of this kernel is very easy, you may download the appropriate deb packages from here and install them with Ubuntu Software Center. Or simply follow the instructions below which will help you install this new kernel with a few terminal commands.

Here are some of the fixes for Kernel 3.7.6 taken from the changelog:



  •     drm/i915: fix FORCEWAKE posting reads
  •     ALSA: hda - Fix non-snoop page handling
  •     ALSA: hda - fix inverted internal mic on Acer AOA150/ZG5
  •     ALSA: hda - Add a fixup for Packard-Bell desktop with ALC880
  •     ALSA: usb-audio: fix invalid length check for RME and other UAC 2 devices
  •     ath9k_hw: fix chain swap setting when setting rx chainmask to 5
  •     DM-RAID: Fix RAID10's check for sufficient redundancy
  •     xfs: fix periodic log flushing
  •     iwlegacy: fix IBSS cleanup
  •     xfs: fix _xfs_buf_find oops on blocks beyond the filesystem end
  •     x86, efi: Fix 32-bit EFI handover protocol entry point
  •     x86, efi: Fix display detection in EFI boot stub
  •     smp: Fix SMP function call empty cpu mask race
  •     NFSv4: Fix NFSv4 trunking discovery
  •     NFSv4: Fix NFSv4 reference counting for trunked sessions
  •     NFS: Fix error reporting in nfs_xdev_mount
  •     Bluetooth: Fix incorrect strncpy() in hidp_setup_hid()
  •     kvm: Fix irqfd resampler list walk
  •     drm/radeon: fix cursor corruption on DCE6 and newer
  •     drm/radeon: fix a rare case of double kfree
  •     drm/radeon: fix error path in kpage allocation

Linux Kernel 3.7.6 Installation

To install Linux Kernel 3.7.6 in Ubuntu/Linux Mint (12.10/12.04 and Linux Mint 14/13 or older), open the terminal and issue these commands at your own risk:

cd /tmp 
wget http://dl.dropbox.com/u/47950494/upubuntu.com/kernel-3.7.6 -O kernel-3.7.6 
chmod +x kernel-3.7.6 
sudo sh kernel-3.7.6 
sudo reboot

Nvidia Troubleshooting

For unexpected problems with the Nvidia driver, you may fix your system using the following instructions:

- Press CTRL+ALT+F2 and enter these commands:

cd /usr/src/linux-headers-3.7.6-030706/arch/x86/include 
sudo cp -v generated/asm/unistd* ./asm 
sudo apt-get install --reinstall nvidia-current

Kernel Removal

For complete removal of kernel 3.7.6, you can use this command:

sudo apt-get purge linux-image-3.7.6*

Monday, January 28, 2013

Install Linux Kernel 3.7.5 in Ubuntu/Linux Mint



Linux Kernel 3.7.5 is the fifth maintenance release of the kernel 3.7 series that has been made available for Linux users. This update brings more bug fixes and improvements. I have updated the bash script so that users can upgrade to this new kernel smoothly. You have to bear in mind that upgrading the kernel may render your system unstable, unusable or even may cause the loss of some device drivers (WiFi, videos drivers, etc.), so it is recommended that you backup your system before proceeding to the installation of this new kernel.

Here are some of the fixes taken from the kernel's changelog:



  •     ACPI: Add fixups for AMD P-state figures
  •     ACPI / processor: Get power info before updating the C-states    
  •     ALSA: hda - Fix mute led for another HP machine
  •     ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled
  •     module: fix missing module_mutex unlock
  •     usb: gadget: FunctionFS: Fix missing braces in parse_opts
  •     usb: dwc3: gadget: fix ep->maxburst for ep0
  •     USB: UHCI: fix IRQ race during initialization
  •     arm64: elf: fix core dumping to match what glibc expects
  •     arm64: makefile: fix uname munging when setting ARCH on native machine
  •     vfio-pci: Fix buffer overfill
  •     ioat: Fix DMA memory sync direction correct flag

You can install the kernel in the following Ubuntu/Linux Mint distros (AT YOUR OWN RISK!):

  • Ubuntu 12.10/12.04/11.10 or older
  • Linux Mint 14/13/12 or older
Linux Kernel 3.7.5 Installation

As usual, you may download and install the kernel packages from here, or run simply this sequence of commands:

cd /tmp 
wget http://dl.dropbox.com/u/47950494/upubuntu.com/kernel-3.7.5 -O kernel-3.7.5 
chmod +x kernel-3.7.5 
sudo sh kernel-3.7.5 
sudo reboot

When having kernel upgrade troubles for users running the Nvidia driver, you can fix your system by enabling the text mode (CTRL+ALT+F2) and entering these commands:

    cd /usr/src/linux-headers-3.7.5-030705/arch/x86/include 
    sudo cp -v generated/asm/unistd* ./asm 
    sudo apt-get install --reinstall nvidia-current

Finally, to uninstall Kernel 3.7.5, you may use this command:

     sudo apt-get purge linux-image-3.7.5*

Tuesday, January 22, 2013

Install Linux Kernel 3.7.4 in Ubuntu/Linux Mint



Another update for Kernel 3.7 series has been made available recently which brings various bug fixes and improvements. As usual, we have updated our simple bash script to be able to install Linux Kernel 3.7.4 with just a few commands on the terminal.

But let's first see some of the changes and fixes in this latest kernel taken from the changelog:



  •     USB: io_ti: Fix NULL dereference in chase_port()
  •     drm/radeon: fix a bogus kfree
  •     drm/radeon: fix NULL pointer dereference in UMS mode
  •     ALSA: usb - fix race in creation of M-Audio Fast track pro driver
  •     s390/time: fix sched_clock() overflow
  •     sh: Fix FDPIC binary loader
  •     mxs: uart: fix setting RTS from software
  •     staging: vt6656: Fix inconsistent structure packing
  •     staging: wlan-ng: Fix clamping of returned SSID length


  Linux Kernel 3.7.4 Installation

To install Linux Kernel 3.7.4 (Ubuntu 12.10/12.04 or older and Linux Mint 14/13 or older) in your system, open the terminal and enter these commands at your own risk:

cd /tmp 
wget http://dl.dropbox.com/u/47950494/upubuntu.com/kernel-3.7.4 -O kernel-3.7.4 
chmod +x kernel-3.7.4 
sudo sh kernel-3.7.4 
sudo reboot

If you have encountered any troubles while installing this kernel in a system having the Nvidia driver installed, you can try to fix it by enabling text mode (CTRL+ALT+F2) and executing these commands:

cd /usr/src/linux-headers-3.7-030704/arch/x86/include 
sudo cp -v generated/asm/unistd* ./asm 
sudo apt-get install --reinstall nvidia-current

In case you want to uninstall Linux Kernel 3.7.4, issue this command:

sudo apt-get purge linux-image-3.7.4*

Sunday, November 18, 2012

Install Linux Kernel 3.6.7 In Ubuntu 12.10/12.04/Linux Mint 13



Linux Kernel 3.6.7 has been released recently bringing more improvements and bug fixes. As usual, we will help Ubuntu/Linux Mint users to upgrade to this new kernel using our simple bash script as described below. If you want to download and install manually the kernel deb packages, click here. Here are some of the changes and fixes taken from the ChangeLog of kernel 3.6.7:



  •     ALSA: usb-audio: Fix mutex deadlock at disconnection
  •     ALSA: Fix card refcount unbalance
  •     ALSA: usb-audio: Fix races at disconnection
  •     DRM/Radeon: Fix Load Detection on legacy primary DAC.
  •     xfs: fix buffer shudown reference count mismatch
  •     xfs: fix reading of wrapped log data
  •     cfg80211: fix antenna gain handling
  •     drm/vmwgfx: Fix a case where the code would BUG when trying to pin GMR memory
  •     drm/vmwgfx: Fix hibernation device reset
  •     mmc: sdhci: fix NULL dereference in sdhci_request() tuning
  •     l2tp: fix oops in l2tp_eth_create() error path
  •     net: usb: Fix memory leak on Tx data path
  •     net: fix secpath kmemleak
  •     tcp: fix FIONREAD/SIOCINQ
  •     ipv4: Fix flushing of cached routing informations
  •     sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()
  •     batman-adv: Fix broadcast packet CRC calculation
  •     NFS: fix bug in legacy DNS resolver.
  •     mac80211: fix SSID copy on IBSS JOIN
  •     drm/i915: fix overlay on i830M

Linux Kernel 3.6.7 Installation

Open the terminal under Ubuntu 12.10/12.04/Linux Mint 13 or older and run this sequence of commands:

cd /tmp 
wget http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.6.7 -O linux-kernel-3.6.7 
chmod +x linux-kernel-3.6.7 
sudo sh linux-kernel-3.6.7 
sudo reboot

To uninstall Kernel 3.6.7, issue this command from the terminal:

sudo apt-get purge linux-image-3.6.7*

If you have failed in installing this kernel, you may find this article helpful.

Saturday, October 13, 2012

Install Linux Kernel 3.6.2 On Ubuntu 12.10/12.04/Linux Mint 13



Linux Kernel 3.6.2 is the second maintenance release of the stable version of Linux 3.6 kernel series that has been released recently, and all users must upgrade.

Here are some of the changes and bug fixes in this latest release taken from the Changelog:


Fix Unmount Regression
Fix Module Loading
Fix A Memory Corruption
Fix Crash When Accessing /proc/mounts Concurrently
ext4: Fix Potential Deadlock In ext4_nonda_switch()
ixgbe: Fix PTP Ethtool Timestamping Function
Powerpc: Fix VMX Fix For Memcpy Case
lguest: Fix Occasional Crash In Example Launcher
Drivers/scsi/atp870u.c: Fix Bad Use Of Udelay
Slab: Fix The DEADLOCK Issue On l3 Alien Lock, etc.

For full changelog, click here. In this tutorial we will help you install Linux Kernel 3.6.2 in the following Linux distributions:

  • Ubuntu 12.10/12.04/11.10 or older
  • Linux Mint 13/12 or older
Linux Kernel 3.6.2 Installation

Open the terminal and run the following commands:

cd /tmp

wget http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.6.2 -O linux-kernel-3.6.2

chmod +x linux-kernel-3.6.2

sudo sh linux-kernel-3.6.2

Reboot your system to finish the installation. To check if the kernel is well installed, run this command:

uname -r

To delete Kernel 3.6.2 and revert back to the previous kernel, run this command:


sudo apt-get purge linux-image-3.6.2-030602

For any trouble encountered after upgrading to this new kernel, you may find this article helpful in case your system is unable to load or having instability issues.

Sunday, September 16, 2012

New Kernel Vulnerabilities Affect Ubuntu 11.10 and 11.04


New vulnerabilities were found in the Linux kernel packages, this time affecting the Ubuntu 11.04 (Natty Narwhal) and Ubuntu 11.10 (Oneiric Ocelot) operating systems.

The following four Linux kernel vulnerabilities affect Ubuntu 11.04 (Natty Narwhal): CVE-2012-2745, CVE-2012-3412, CVE-2012-3430 and CVE-2012-3511.

The following two Linux kernel vulnerabilities affect Ubuntu 11.10 (Oneiric Ocelot): CVE-2012-3412 and CVE-2012-3430.

As usual, you can click on each one to see how it affects your system, or go here and here for in-depth descriptions, as it affects other Linux operating systems as well.

The security flaws can be fixed if you upgrade your system(s) to the linux-image-2.6.38-16 (2.6.38-16.67) package(s) for Ubuntu 11.04, and the linux-image-3.0.0-26 (3.0.0-26.42) package(s) for Ubuntu 11.10.

Don't forget to reboot your computer after the upgrade!

For detailed instruction on how to upgrade your system see the following link: https://wiki.ubuntu.com/Security/Upgrades.

How To Install Linux Kernel 3.5.4 On Ubuntu 12.10/12.04/11.10/Linux Mint 13



If you are using Linux 3.5 kernel series, then you need to upgrade to Linux Kernel 3.5.4 which has been released recently. This fourth maintenance release brings more fixes and improvements. Here are some of the changes in this latest release:


  • ARM fixes
  • PowerPC & x86 improvements
  • Better support for AMD C-50 notebook processors
  • Better support for USB devices, etc
You can check the full changelog of Linux Kernel 3.5.4 here.

Linux Kernel 3.5.4 Installation

You can install Linux Kernel 3.5.4 for both i386/amd64 platforms with the following commands at your own risk under Ubuntu 12.10/12.04/11.10/Linux Mint 13 or older:

cd /tmp

wget -O linux-kernel-3.5.4 http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.5.4

chmod +x linux-kernel-3.5.4

sudo sh linux-kernel-3.5.4

After rebooting your system, you can check the current kernel version with this command:

uname -r

If you want to restore the previous Linux Kernel, run this command to uninstall Linux Kernel 3.5.4:

sudo apt-get purge linux-image-3.5.4-030504

Friday, September 14, 2012

Pear Linux 6 Alpha 1 Is Now Available for Testing


David Tavares, the developer of Pear Linux, has announced yesterday, September 13th, on Twitter, that the first Alpha version of the upcoming Pear Linux 6 operating system is now available for download and testing.

Dubbed Bartlett, Pear Linux 6 Alpha 1 is now based on the latest LTS release of the Ubuntu OS and it is powered by Linux kernel 3.2 with support for PAE (Physical Address Extension).

"Alpha 1 is the first in a series of milestone images that will be released throughout the Pear Linux 6 development cycle."

"The Alpha images are known to be reasonably free of showstopper CD build or installer bugs, while representing a very recent snapshot of Pear Linux 6," the official release announcement read.

Highlights of Pear Linux 6 Alpha 1:

· Based on Ubuntu 12.04.1 LTS (Precise Pangolin);
· Linux kernel 3.2 with PAE;
· Added Pear Linux Shell 6.0;
· Added Pear Linux Panel 1.0;
· Pear Linux Control Center;
· Updated Pear Appstore to version 6.0;
· Added new Pear Linux icons;
· Added new Pera Linux desktop theme
· Added new boot splash;
· Added new login screen;
· Added new desktop notification system;
· Updated lots of applications.


When the final version is released, users will need the following minimum system requirements for a fresh Pear Linux 6 installation:

· Intel Pentium III 500 MHz or higher CPU;
· At least 512 GB of RAM (1 GB recommended);
· At least 8 GB HDD free space;
· Supported graphics card capable of 800x600 or 1024x768 resolution: Nvidia, ATI/AMD, Intel, SiS, Matrox, VIA (3D desktop effects require a video card with 3D acceleration).

Pear Linux 6 Alpha 1 is distributed as Live DVD ISO images supporting only the 32-bit architecture.
  

Download Pear Linux 6 Alpha 1 

Sunday, August 12, 2012

Install Linux Kernel 3.5.1/3.4.8 On Ubuntu 12.04/Linux Mint 13



Two updates for Linux 3.4 kernel series and Linux 3.5 kernel series have been released recently bringing more support for hardware drivers and various corrections and improvements. You can find full changelog for Kernel 3.5.1 here, and here you can find full changelog for Linux kernel 3.4.8.

In this tutorial, we will see how to install these two kernel versions under Ubuntu 12.04/11.10 or older and Linux Mint 13 or older.

Kernel 3.5.1 Installation

Users of the Linux 3.5 kernel series can upgrade to the 3.5.1 version with these commands for both 32-bit-i386/64-bit-amd64 systems:

cd /tmp 

wget -O linux-kernel-3.5.1 http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.5.1

chmod +x linux-kernel-3.5.1

sudo sh linux-kernel-3.5.1

After installing the kernel, reboot your system, then check if it is well installed with this command:

uname -r

outputs returned:

3.5.1-030501-generic

To uninstall kernel 3.5.1 and revert to the previous kernel, run this command:

sudo apt-get purge linux-image-3.5.1-030501

Kernel 3.4.8 Installation

Users of the Linux 3.4 kernel series can upgrade to the 3.4.8 version with the following commands:

cd /tmp

wget -O linux-kernel-3.4.8 http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.4.8

chmod +x linux-kernel-3.4.8

sudo sh linux-kernel-3.4.8

Then reboot your system to finish the installation of the kernel. To uninstall kernel 3.4.8, run this command:

sudo apt-get purge linux-image-3.4.8-030408

Friday, August 3, 2012

Download Linux Kernel 3.6 Release Candidate 1


Linus Torvalds announced earlier today, August 3rd, that the first Release Candidate of the upcoming Linux 3.6 kernel is now available for download and testing.

Linux kernel 3.6 RC1 brings mostly updated drivers, but it also contains ARM/X86/PowerPC/MIPS/tile/m68k fixes, as well as filesystem and networking improvements.

"Anyway, on to the stuff merged. As usual, even the shortlog is too big to usefully post, but there's the usual breakdown: about two thirds of the changes are drivers (with the CSR driver from the staging tree being a big chunk of the noise - christ, that thing is big and wordy even after some of the crapectomy)." - said Linus Torvalds in the email announcement.


 Download Linux kernel 3.6 RC1

Tuesday, July 31, 2012

Install Linux 3.4.7 Kernel On Ubuntu 12.04/Linux Mint 13



A seventh maintenance release has been made available recently for users having the Linux 3.4 kernel series. In this tutorial, we will help you upgrade to kernel 3.4.7 using a simple bash script that will install for you all needed packages. If you want to upgrade to kernel 3.5, you can find here a tutorial explaining this.

Linux 3.4.7 brings some core patches, improvements in filesystem, ARM fixes, and some updated drivers. You can find the full changelog here.

Linux Kernel 3.4.7 Installation

Open the terminal and install Linux Kernel 3.4.7 on Ubuntu 12.04/Linux Mint 13 or older with the following commands:

cd /tmp && wget -O linux-kernel-3.4.7 http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.4.7


chmod +x linux-kernel-3.4.7


sudo sh linux-kernel-3.4.7

Restart now your computer and check your current kernel version with this command:

uname -r

Outputs returned:

3.4.7-030407-generic

To restore the previous kernel and remove Linux 3.4.7, issue this command, then reboot:

sudo apt-get purge linux-image-3.4.7-030407-generic

Good luck!

Monday, July 30, 2012

4MLinux Core 4.0 Has Linux Kernel 3.4.2


4MLinux Core, a mini Linux distro focusing on Maintenance (system rescue Live CD), Multimedia (e.g., playing video DVDs), Miniserver (using the inetd daemon), and Mystery (Linux games), is now at version 4.0.

4MLinux Core 4.0 integrates all the new features introduced in the previous version, with an additional possibility of a fully automatic upgrade to 4MLinux Allinone Edition, when it will become available.

Highlights of 4MLinux Core 4.0:

· Linux kernel has been updated to version 3.4.2;
· glibc has been updated to 2.14.90;
· Busybox has been updated to version 1.20.1.

According to the developers, all the applications present in 4MLinux 4.0 have been compiled under Fedora 16. It will be used as the core for all the other editions: Allinone, Game, Media, Server, and Rescue.


Download 4MLinux Core 4.0

Vine Linux 6.1


Daisuke Suzuki has announced the release of Vine Linux 6.1, the oldest and most prominent community distribution of Linux in Japan. This release, code-named "Pape Clement", comes after about a year of development and includes the following software applications and features: Linux kernel 3.0.38 with long-term support; Mozilla Firefox 14.0.1 and Thunderbird 14.0; X.Org Intel driver with support for Sandy Bridge and Ivy Bridge microarchitectures; LibreOffice 3.5.5; Adobe Flash Player 11.2 and Adobe Reader 9.4; OpenJDK 1.6 runtime; MPlus Outline and Aoyagi fonts; all errata notices since the release of Vine Linux 6.0. It is recommended that all 6.0 users upgrade to the 6.1 release as soon as possible. Read the release announcement and release notes (both links in Japanese) for system requirements and other information. Download links: Vine61-DVD-i686.iso (1,879MB, SHA1), Vine61-DVD-x86_64.iso (1,911MB, SHA256).

Tuesday, July 24, 2012

New Kernel Vulnerability Affects Ubuntu 12.04 LTS



Canonical announced a few hours ago, July 23rd, in a security notice, that a new Linux kernel update for its Ubuntu 12.04 LTS (Precise Pangolin) operating system is now available, fixing one security vulnerability discovered in the Linux kernel packages.

The CVE-2012-2390 vulnerability is actually an error discovered in the Linux kernel's memory subsystem (hugetlb), that could allow unprivileged local users to exploit it and to cause a DoS (Denial of Service) attack by crashing the system.

Please go here for in-depth descriptions of the vulnerability, as it affects other Linux operating systems as well.

The security flaw can be fixed if you upgrade your system(s) to the linux-image-3.2.0-27 (3.2.0-27.43) package(s). To apply the update, run the Update Manager application.

Don't forget to reboot your computer after the upgrade!

Monday, July 23, 2012

Linux Kernel 3.5 Has Been Officially Released


After yet another seven Release Candidate versions, Linus Torvalds proudly announced yesterday, July 21st, the immediate availability for download of Linux kernel 3.5.

Linux kernel 3.5 brings various interesting features (check out the highlights below and the quote from Linus Torvalds’ announcement) among which we can mention support for metadata checksums in the EXT4 filesystem, support for restoring and checkpointing TCP connections, support for TCP Early Retransmit (RFC 5827), a new network queue management algorithm designed to fight bufferbloat, Btrfs I/O failure statistics, and much more.

There's a number of MIPS commits (for some reason MIPS has had a horrible track record with the -rc time schedule, I suspect I should just stop pulling late in the game), but most of the rest is pretty small.

A couple of dm/md fixes, some gma500 work, make kgdb 'dmesg' command work again, some networking fixes, some xfs and cifs noise, yadda yadda. About 50% of the patch is actually the SPEAr clock name renaming that is just some search-and-replace.” - said Linus Torvalds in the official announcement.

Highlights of Linux Kernel 3.5:

· EXT4 metadata checksums;
· Uprobes: userspace probes;
· Seccomp-based system call filtering;
· Bufferbloat fighting: CoDel queue management;
· TCP connection repair;
· TCP Early Retransmit;
· Android-style opportunistic suspend;
· Btrfs: I/O failure statistics, latency improvements;
· SCSI over FireWire and USB.

Linux kernel 3.5 also comes with many improvements in various areas, such as memory management fixes, networking, virtualization, security, perf/tracing, block, improvements to Btrfs, Tmpfs, XFS, CIFS, JFFS2, exofs, Cifs filesystems, as well as various core changes.

For a complete list of all the newly added drivers, newly supported devices, and other improvements, do not hesitate to view the official changelog and the Linux kernel 3.5 DriverArch page.



Download Linux kernel 3.5

Saturday, July 21, 2012

Install Linux Kernel 3.4.6 On Ubuntu 12.04/Linux Mint 13



Another maintenance release for Linux 3.4 has been made available recently. We have previously seen the release of Linux 3.4.5 (three days ago), but this kernel brings minor improvements and updates drivers. You can see the release notes for Linux 3.4.6 here.

Linux Kernel 3.4.6 Installation

To install Linux Kernel 3.4.6, you can install Debian packages for your appropriate architecture from this page, or make an automatic installation via our bash script for both Ubuntu 12.04 or Linux Mint 13 as follows:

 cd /tmp && wget -O linux-kernel-3.4.6 http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.4.6

chmod +x linux-kernel-3.4.6 && sudo sh linux-kernel-3.4.6

When the installation is complete, reboot your system. Next, make sure Linux Kernel 3.4.6 is installed correctly with this command:

 uname -r

To remove this kernel and restore the previous one, run this command:

 sudo apt-get purge linux-image-3.4.6-030406-generic

Good luck!

Friday, July 20, 2012

Linux Kernel 3.4.6 Is Available for Download


Greg Kroah-Hartman announced a few hours ago, July 19th, the immediate availability for download of the sixth maintenance release for the stable Linux 3.4 kernel series.

Coming after only three days from the previous release, Linux kernel 3.4.6 only brings updated drivers, a handful of other small improvements.

"I'm announcing the release of the 3.4.6 kernel. All users of the 3.4 kernel series must upgrade."

"The updated 3.4.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-3.4.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary," said Greg KH in the email announcement.

As usual, the Linux kernel 3.4.6 is a must-grab update for all Linux users who use the Linux 3.4 kernel. Therefore, upgrade as soon as possible!



Download Linux kernel 3.4.6

Wednesday, July 18, 2012

Two New Kernel Vulnerabilities Affect Ubuntu 8.04 LTS


Canonical announced on July 16th, in a security notice, that a new kernel upgrade for its Ubuntu 8.04 LTS (Hardy Heron) operating system is available, fixing two vulnerabilities found by various developers in the kernel packages.

These are the two vulnerabilities found in the Linux kernel packages by various developers: CVE-2012-1601 and CVE-2012-2744.

You can click on each one to see how it affects your system, or go here for in-depth descriptions, as it affects other Linux operating systems as well.

The security flaws can be fixed if you upgrade your system(s) to the linux-image-2.6.24-32 (2.6.24-32.104) package.

Don't forget to reboot your computer after the upgrade!

ATTENTION: Due to an unavoidable ABI change, the kernel packages have a new version number, which will force you to reinstall and recompile all third-party kernel modules you might have installed. Moreover, if you use the linux-restricted-modules package, you have to update it as well to get modules that work with the new Linux kernel version.