USN-1673-1: Linux kernel (OMAP4) vulnerability

Releases

• Ubuntu 12.10

Packages

• linux-ti-omap4 - Linux kernel for OMAP4

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)

A flaw was discovered in the Linux kernel's handling of new hot-plugged
memory. An unprivileged local user could exploit this flaw to cause a
denial of service by crashing the system. (CVE-2012-5517)

An information leak was discovered in the Linux kernel's /dev/dvb device. A
local user could exploit this flaw to obtain sensitive information from the
kernel's stack memory. (CVE-2013-1928)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.10

• linux-image-3.5.0-216-omap4 - 3.5.0-216.23

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

• CVE-2012-4508
• CVE-2012-5517
• CVE-2013-1928

Related notices

• USN-1644-1
• USN-1719-1
• USN-1900-1
• USN-1645-1
• USN-1704-1
• USN-1671-1
• USN-1720-1
• USN-1726-1
• USN-1899-1
• USN-1679-1
• USN-1678-1
• USN-1670-1
• USN-1677-1
• USN-1669-1
• USN-1648-1
• USN-1649-1
• USN-1829-1
• USN-1824-1
• USN-1652-1