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Ubuntu Security Notice USN-6536-1

Ubuntu Security Notice USN-6536-1
Posted Dec 7, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6536-1 - 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 or possibly expose sensitive information. Kyle Zeng discovered that the IPv4 implementation in the Linux kernel did not properly handle socket buffers when performing IP routing in certain circumstances, leading to a null pointer dereference vulnerability. A privileged attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-39189, CVE-2023-42754, CVE-2023-45898, CVE-2023-5158, CVE-2023-5178, CVE-2023-5717
SHA-256 | 491b7ae32101abad487102763eda45d30db3ca5f36849f84e358d72012a127f3

Ubuntu Security Notice USN-6536-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6536-1
December 06, 2023

linux, linux-aws, linux-azure, linux-laptop, linux-lowlatency,
linux-oem-6.5, linux-oracle, linux-raspi, linux-starfive vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS

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 routing in
certain circumstances, leading to a null pointer dereference vulnerability.
A privileged attacker could use this to cause a denial of service (system
crash). (CVE-2023-42754)

Yikebaer Aizezi discovered that the ext4 file system implementation in the
Linux kernel contained a use-after-free vulnerability when handling inode
extent metadata. An attacker could use this to construct a malicious ext4
file system image that, when mounted, could cause a denial of service
(system crash). (CVE-2023-45898)

Jason Wang discovered that the virtio ring implementation in the Linux
kernel did not properly handle iov buffers in some situations. A local
attacker in a guest VM could use this to cause a denial of service (host
system crash). (CVE-2023-5158)

Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly handle queue initialization failures in certain
situations, leading to a use-after-free vulnerability. A remote attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-5178)

Budimir Markovic discovered that the perf subsystem in the Linux kernel did
not properly handle event groups, leading to an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-5717)

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.

References:
https://ubuntu.com/security/notices/USN-6536-1
CVE-2023-39189, CVE-2023-42754, CVE-2023-45898, CVE-2023-5158,
CVE-2023-5178, CVE-2023-5717

Package Information:
https://launchpad.net/ubuntu/+source/linux/6.5.0-14.14
https://launchpad.net/ubuntu/+source/linux-aws/6.5.0-1011.11
https://launchpad.net/ubuntu/+source/linux-azure/6.5.0-1009.9
https://launchpad.net/ubuntu/+source/linux-laptop/6.5.0-1007.10
https://launchpad.net/ubuntu/+source/linux-lowlatency/6.5.0-14.14.1
https://launchpad.net/ubuntu/+source/linux-oracle/6.5.0-1013.13
https://launchpad.net/ubuntu/+source/linux-raspi/6.5.0-1008.11
https://launchpad.net/ubuntu/+source/linux-starfive/6.5.0-1005.6
https://launchpad.net/ubuntu/+source/linux-oem-6.5/6.5.0-1009.10

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