Ubuntu 22.04 LTS: 6607-1 critical: kernel denial of service

ubuntu

January 26, 2024

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems

- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems

- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems

Details:

It was discovered that the SMB network file sharing protocol implementation

in the Linux kernel did not properly handle certain error conditions,

leading to a use-after-free vulnerability. A local attacker could use this

to cause a denial of service (system crash) or possibly execute arbitrary

code. (CVE-2023-5345)

Lin Ma discovered that the netfilter subsystem in the Linux kernel did not

properly validate network family support while creating a new netfilter

table. A local attacker could use this to cause a denial of service or

possibly execute arbitrary code. (CVE-2023-6040)

It was discovered that t...

Read the Full Advisory

Topics Covered

security advisory denial of service Ubuntu kernel updates Linux

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1054-azure   5.15.0-1054.62
   linux-image-5.15.0-1054-azure-fde  5.15.0-1054.62.1
   linux-image-azure-fde-lts-22.04  5.15.0.1054.62.32
   linux-image-azure-lts-22.04     5.15.0.1054.50

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1054-azure   5.15.0-1054.62~20.04.1
   linux-image-5.15.0-1054-azure-fde  5.15.0-1054.62~20.04.1.1
   linux-image-azure               5.15.0.1054.62~20.04.43
   linux-image-azure-cvm           5.15.0.1054.62~20.04.43
   linux-image-azure-fde           5.15.0.1054.62~20.04.1.32

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.