USN-1899-1: Linux kernel vulnerabilities
4 July 2013
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
Dmitry Monakhov reported a race condition flaw the Linux ext4 filesystem
that can expose stale data. An unprivileged user could exploit this flaw to
cause an information leak. (CVE-2012-4508)
Dave Jones discovered that the Linux kernel's socket subsystem does not
correctly ensure the keepalive action is associated with a stream socket. A
local user could exploit this flaw to cause a denial of service (system
crash) by creating a raw socket. (CVE-2012-6657)
An information leak was discovered in the Linux kernel's tkill and tgkill
system calls when used from compat processes. A local user could exploit
this flaw to examine potentially sensitive kernel memory. (CVE-2013-2141)
Kees Cook discovered a format string vulnerability in the Broadcom B43
wireless driver for the Linux kernel. A local user could exploit this flaw
to gain administrative privileges. (CVE-2013-2852)
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-2.6.32-49-generic-pae
-
2.6.32-49.111
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linux-image-2.6.32-49-preempt
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2.6.32-49.111
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linux-image-2.6.32-49-virtual
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2.6.32-49.111
-
linux-image-2.6.32-49-lpia
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2.6.32-49.111
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linux-image-2.6.32-49-sparc64
-
2.6.32-49.111
-
linux-image-2.6.32-49-server
-
2.6.32-49.111
-
linux-image-2.6.32-49-powerpc-smp
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2.6.32-49.111
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linux-image-2.6.32-49-versatile
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2.6.32-49.111
-
linux-image-2.6.32-49-powerpc64-smp
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2.6.32-49.111
-
linux-image-2.6.32-49-386
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2.6.32-49.111
-
linux-image-2.6.32-49-generic
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2.6.32-49.111
-
linux-image-2.6.32-49-powerpc
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2.6.32-49.111
-
linux-image-2.6.32-49-sparc64-smp
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2.6.32-49.111
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linux-image-2.6.32-49-ia64
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2.6.32-49.111
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.
References
Related notices
- USN-1644-1: linux-image-3.2.0-34-highbank, linux-image-3.2.0-34-virtual, linux, linux-image-3.2.0-34-powerpc64-smp, linux-image-3.2.0-34-omap, linux-image-3.2.0-34-generic, linux-image-3.2.0-34-powerpc-smp, linux-image-3.2.0-34-generic-pae
- USN-1719-1: linux-image-3.0.0-31-virtual, linux-image-3.0.0-31-server, linux-lts-backport-oneiric, linux-image-3.0.0-31-generic-pae, linux-image-3.0.0-31-generic
- USN-1900-1: linux-ec2, linux-image-2.6.32-354-ec2
- USN-1645-1: linux-image-3.2.0-1422-omap4, linux-ti-omap4
- USN-1704-1: linux-lts-quantal, linux-image-3.5.0-22-generic
- USN-1673-1: linux-image-3.5.0-216-omap4, linux-ti-omap4
- USN-1671-1: linux-image-3.5.0-21-omap, linux, linux-image-3.5.0-21-generic, linux-image-3.5.0-21-powerpc-smp, linux-image-3.5.0-21-highbank, linux-image-3.5.0-21-powerpc64-smp
- USN-1720-1: linux-image-3.0.0-31-powerpc-smp, linux-image-3.0.0-31-omap, linux, linux-image-3.0.0-31-server, linux-image-3.0.0-31-virtual, linux-image-3.0.0-31-powerpc64-smp, linux-image-3.0.0-31-generic-pae, linux-image-3.0.0-31-generic, linux-image-3.0.0-31-powerpc
- USN-1726-1: linux-image-3.0.0-1221-omap4, linux-ti-omap4
- USN-1839-1: linux-image-3.2.0-1432-omap4, linux-ti-omap4
- USN-1833-1: linux-image-3.2.0-44-powerpc64-smp, linux-image-3.2.0-44-generic, linux-image-3.2.0-44-omap, linux-image-3.2.0-44-generic-pae, linux, linux-image-3.2.0-44-virtual, linux-image-3.2.0-44-highbank, linux-image-3.2.0-44-powerpc-smp
- USN-1883-1: linux-image-3.5.0-226-omap4, linux-ti-omap4
- USN-1880-1: linux-image-3.5.0-34-generic, linux-lts-quantal
- USN-1881-1: linux, linux-image-3.5.0-34-powerpc64-smp, linux-image-3.5.0-34-generic, linux-image-3.5.0-34-highbank, linux-image-3.5.0-34-powerpc-smp, linux-image-3.5.0-34-omap
- USN-1882-1: linux-image-3.5.0-226-omap4, linux-ti-omap4
- USN-1849-1: linux-image-3.8.0-23-generic, linux-lts-raring
- USN-1837-1: linux, linux-image-3.8.0-22-generic
- USN-1930-1: linux-ti-omap4, linux-image-3.2.0-1436-omap4
- USN-1936-1: linux-lts-raring, linux-image-3.8.0-29-generic
- USN-1918-1: linux-image-3.5.0-229-omap4, linux-ti-omap4
- USN-1914-1: linux-image-3.2.0-51-generic-pae, linux-image-3.2.0-51-virtual, linux-image-3.2.0-51-powerpc64-smp, linux, linux-image-3.2.0-51-omap, linux-image-3.2.0-51-highbank, linux-image-3.2.0-51-generic, linux-image-3.2.0-51-powerpc-smp
- USN-1915-1: linux-image-3.5.0-37-generic, linux-lts-quantal
- USN-1919-1: linux, linux-image-3.8.0-27-generic
- USN-1917-1: linux-image-3.5.0-37-powerpc64-smp, linux, linux-image-3.5.0-37-highbank, linux-image-3.5.0-37-powerpc-smp, linux-image-3.5.0-37-omap, linux-image-3.5.0-37-generic
- USN-1920-1: linux-image-3.5.0-229-omap4, linux-ti-omap4