Ubuntu 6326 Published by

The following kernel updates are available for Ubuntu Linux:

[USN-6625-3] Linux kernel (Raspberry Pi) vulnerabilities
[USN-6646-1] Linux kernel vulnerabilities
[USN-6645-1] Linux kernel vulnerability




[USN-6625-3] Linux kernel (Raspberry Pi) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-6625-3
February 20, 2024

linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems

Details:

Marek Marczykowski-Górecki discovered that the Xen event channel
infrastructure implementation in the Linux kernel contained a race
condition. An attacker in a guest VM could possibly use this to cause a
denial of service (paravirtualized device unavailability). (CVE-2023-34324)

Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver
in the Linux kernel during device removal. A privileged attacker could use
this to cause a denial of service (system crash). (CVE-2023-35827)

It was discovered that a race condition existed in the Linux kernel when
performing operations with kernel objects, leading to an out-of-bounds
write. A local attacker could use this to cause a denial of service (system
crash) or execute arbitrary code. (CVE-2023-45863)

黄思聪 discovered that the NFC Controller Interface (NCI) implementation in
the Linux kernel did not properly handle certain memory allocation failure
conditions, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2023-46343)

Update instructions:

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

Ubuntu 20.04 LTS:
linux-image-5.4.0-1102-raspi 5.4.0-1102.114
linux-image-raspi 5.4.0.1102.132
linux-image-raspi2 5.4.0.1102.132

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
linux-image-5.4.0-1102-raspi 5.4.0-1102.114~18.04.1
linux-image-raspi-hwe-18.04 5.4.0.1102.99

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-6625-3
https://ubuntu.com/security/notices/USN-6625-1
CVE-2023-34324, CVE-2023-35827, CVE-2023-45863, CVE-2023-46343

Package Information:
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1102.114



[USN-6646-1] Linux kernel vulnerabilities


==========================================================================
Ubuntu Security Notice USN-6646-1
February 20, 2024

linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

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-kvm: Linux kernel for cloud environments
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

It was discovered that a race condition existed in the ATM (Asynchronous
Transfer Mode) subsystem of the Linux kernel, 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-2023-51780)

It was discovered that a race condition existed in the Rose X.25 protocol
implementation in the Linux kernel, 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-2023-51782)

It was discovered that the netfilter connection tracker for netlink in the
Linux kernel did not properly perform reference counting in some error
conditions. A local attacker could possibly use this to cause a denial of
service (memory exhaustion). (CVE-2023-7192)

Update instructions:

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

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
linux-image-4.4.0-1129-kvm 4.4.0-1129.139
linux-image-4.4.0-1166-aws 4.4.0-1166.181
linux-image-4.4.0-251-generic 4.4.0-251.285
linux-image-4.4.0-251-lowlatency 4.4.0-251.285
linux-image-aws 4.4.0.1166.170
linux-image-generic 4.4.0.251.257
linux-image-generic-lts-xenial 4.4.0.251.257
linux-image-kvm 4.4.0.1129.126
linux-image-lowlatency 4.4.0.251.257
linux-image-lowlatency-lts-xenial 4.4.0.251.257
linux-image-virtual 4.4.0.251.257
linux-image-virtual-lts-xenial 4.4.0.251.257

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
linux-image-4.4.0-1128-aws 4.4.0-1128.134
linux-image-4.4.0-251-generic 4.4.0-251.285~14.04.1
linux-image-4.4.0-251-lowlatency 4.4.0-251.285~14.04.1
linux-image-aws 4.4.0.1128.125

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-6646-1
CVE-2023-51780, CVE-2023-51782, CVE-2023-7192



[USN-6645-1] Linux kernel vulnerability


==========================================================================
Ubuntu Security Notice USN-6645-1
February 20, 2024

linux vulnerability
==========================================================================

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

- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

The system could be made to stop responding under certain conditions.

Software Description:
- linux: Linux kernel

Details:

It was discovered that the netfilter connection tracker for netlink in the
Linux kernel did not properly perform reference counting in some error
conditions. A local attacker could possibly use this to cause a denial of
service (memory exhaustion).

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-3.13.0-196-generic 3.13.0-196.247
linux-image-3.13.0-196-lowlatency 3.13.0-196.247
linux-image-generic 3.13.0.196.206
linux-image-generic-lts-trusty 3.13.0.196.206
linux-image-lowlatency 3.13.0.196.206
linux-image-server 3.13.0.196.206
linux-image-virtual 3.13.0.196.206

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-6645-1
CVE-2023-7192