Alerts This Week
Warning Icon 1 758
Alerts This Week
Warning Icon 1 758

Ubuntu 14.04 LTS USN-6439-2 High: Linux Kernel AWS Denial Of Service

ubuntu
Calendar Grey October 23, 2023
Dist Ubuntu Esm H88
Several vulnerabilities within Ubuntu's linux-aws kernel have been patched through updates, addressing multiple potential security threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

It was discovered that the IPv6 implementation in the Linux kernel

contained a high rate of hash collisions in connection lookup table. A

remote attacker could use this to cause a denial of service (excessive CPU

consumption). (CVE-2023-1206)

Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in

the Linux kernel contained a race condition, leading to a null pointer

dereference vulnerability. A local attacker could use this to cause a

denial of service (system crash). (CVE-2023-31083)

Ross Lagerwall discovered that the Xen netback backend driver in the Linux

kernel did not properly handle certain unusual packets from a

paravirtualized network frontend, leading to a buffer overflow. An attacker

in a guest VM could use this to cause a denial of service (host system

crash) or possibly execute...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow ubuntu system crash linux kernel aws

Update Instructions

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

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   linux-image-4.4.0-1124-aws      4.4.0-1124.130
   linux-image-aws                 4.4.0.1124.121

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-6439-2

https://ubuntu.com/security/notices/USN-6439-1

CVE-2023-1206, CVE-2023-31083, CVE-2023-34319, CVE-2023-3772,

CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-4622,

CVE-2023-4623, CVE-2023-4881, CVE-2023-4921

Ubuntu Security Notice USN-6439-2

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow ubuntu system crash linux kernel aws

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here