USN-1606-1: Linux kernel vulnerabilities
11 October 2012
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual
Machine) subsystem handled MSI (Message Signaled Interrupts). A local
unprivileged user could exploit this flaw to cause a denial of service or
potentially elevate privileges. (CVE-2012-2137)
A flaw was found in how the Linux kernel passed the replacement session
keyring to a child process. An unprivileged local user could exploit this
flaw to cause a denial of service (panic). (CVE-2012-2745)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 10.04
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linux-image-2.6.32-44-ia64
-
2.6.32-44.98
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linux-image-2.6.32-44-386
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2.6.32-44.98
-
linux-image-2.6.32-44-powerpc
-
2.6.32-44.98
-
linux-image-2.6.32-44-preempt
-
2.6.32-44.98
-
linux-image-2.6.32-44-generic-pae
-
2.6.32-44.98
-
linux-image-2.6.32-44-sparc64
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2.6.32-44.98
-
linux-image-2.6.32-44-server
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2.6.32-44.98
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linux-image-2.6.32-44-powerpc64-smp
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2.6.32-44.98
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linux-image-2.6.32-44-sparc64-smp
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2.6.32-44.98
-
linux-image-2.6.32-44-virtual
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2.6.32-44.98
-
linux-image-2.6.32-44-versatile
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2.6.32-44.98
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linux-image-2.6.32-44-generic
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2.6.32-44.98
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linux-image-2.6.32-44-lpia
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2.6.32-44.98
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linux-image-2.6.32-44-powerpc-smp
-
2.6.32-44.98
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.