Ubuntu 23.10 USN-6536-1 moderate: several kernel security issues

ubuntu

December 6, 2023

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

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

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-laptop: Linux kernel for Lenovo X13s ARM laptops

- linux-lowlatency: Linux low latency kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

- linux-starfive: Linux kernel for StarFive processors

- linux-oem-6.5: Linux kernel for OEM systems

Details:

Lucas Leong discovered that the netfilter subsystem in the Linux kernel did

not properly validate some attributes passed from userspace. A local

attacker could use this to cause a denial of service (system crash) or

possibly expose sensitive information (kernel memory). (CVE-2023-39189)

Kyle Zeng discovered that the IPv4 implementation in the Linux kernel did

not properly handle socket buffers (skb) when performing IP rou...

Read the Full Advisory

Topics Covered

security advisory denial of service Ubuntu system update kernel issue Linux

Update Instructions

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

Ubuntu 23.10:
   linux-image-6.5.0-1005-starfive  6.5.0-1005.6
   linux-image-6.5.0-1007-laptop   6.5.0-1007.10
   linux-image-6.5.0-1008-raspi    6.5.0-1008.11
   linux-image-6.5.0-1009-azure    6.5.0-1009.9
   linux-image-6.5.0-1009-azure-fde  6.5.0-1009.9
   linux-image-6.5.0-1011-aws      6.5.0-1011.11
   linux-image-6.5.0-1013-oracle   6.5.0-1013.13
   linux-image-6.5.0-14-generic    6.5.0-14.14
   linux-image-6.5.0-14-generic-64k  6.5.0-14.14
   linux-image-6.5.0-14-lowlatency  6.5.0-14.14.1
   linux-image-6.5.0-14-lowlatency-64k  6.5.0-14.14.1
   linux-image-aws                 6.5.0.1011.11
   linux-image-azure               6.5.0.1009.11
   linux-image-azure-fde           6.5.0.1009.11
   linux-image-generic             6.5.0.14.16
   linux-image-generic-64k         6.5.0.14.16
   linux-image-generic-lpae        6.5.0.14.16
   linux-image-kvm                 6.5.0.14.16
   linux-image-laptop-23.10        6.5.0.1007.10
   linux-image-lowlatency          6.5.0.14.14.12
   linux-image-lowlatency-64k      6.5.0.14.14.12
   linux-image-oracle              6.5.0.1013.13
   linux-image-raspi               6.5.0.1008.9
   linux-image-raspi-nolpae        6.5.0.1008.9
   linux-image-starfive            6.5.0.1005.7
   linux-image-virtual             6.5.0.14.16

Ubuntu 22.04 LTS:
   linux-image-6.5.0-1009-oem      6.5.0-1009.10
   linux-image-oem-22.04d          6.5.0.1009.11

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.