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Ubuntu 12.04 LTS USN-2714-1 Critical: linux-ti-omap4 DoS Exploits

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Calendar Grey August 18, 2015
Scroller Ubuntu
Numerous security flaws in the Ubuntu 12.04 LTS kernel have been addressed through the latest updates.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel's

SCTP address configuration lists when using Address Configuration Change

(ASCONF) options on a socket. An unprivileged local user could exploit this

flaw to cause a denial of service (system crash). (CVE-2015-3212)

A flaw was discovered in how the Linux kernel handles invalid UDP

checksums. A remote attacker could exploit this flaw to cause a denial of

service using a flood of UDP packets with invalid checksums.

(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP

checksums. A remote attacker can cause a denial of service against

applications that use epoll by injecting a single packet with an invalid

checksum. (CVE-2015-5366)

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash network issue linux-ti-omap4

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-1469-omap4    3.2.0-1469.90

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

https://ubuntu.com/security/notices/USN-2714-1

CVE-2015-3212, CVE-2015-5364, CVE-2015-5366

Severity
critical
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Low
Medium
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Critical

August 18, 2015

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash network issue linux-ti-omap4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1469.90

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