Ubuntu 5669-1: Linux kernel vulnerabilities | LinuxSecurity.com
==========================================================================
Ubuntu Security Notice USN-5669-1
October 10, 2022

linux, linux-dell300x, linux-kvm, linux-oracle, linux-raspi2,
linux-snapdragon vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-dell300x: Linux kernel for Dell 300x platforms
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi2: Linux kernel for Raspberry Pi systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors

Details:

It was discovered that the SUNRPC RDMA protocol implementation in the Linux
kernel did not properly calculate the header size of a RPC message payload.
A local attacker could use this to expose sensitive information (kernel
memory). (CVE-2022-0812)

Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation
in the Linux kernel did not provide sufficient randomization when
calculating port offsets. An attacker could possibly use this to expose
sensitive information. (CVE-2022-1012, CVE-2022-32296)

Duoming Zhou discovered that race conditions existed in the timer handling
implementation of the Linux kernel's Rose X.25 protocol layer, resulting in
use-after-free vulnerabilities. A local attacker could use this to cause a
denial of service (system crash). (CVE-2022-2318)

Roger Pau Monné discovered that the Xen virtual block driver in the Linux
kernel did not properly initialize memory pages to be used for shared
communication with the backend. A local attacker could use this to expose
sensitive information (guest kernel memory). (CVE-2022-26365)

Roger Pau Monné discovered that the Xen paravirtualization frontend in the
Linux kernel did not properly initialize memory pages to be used for shared
communication with the backend. A local attacker could use this to expose
sensitive information (guest kernel memory). (CVE-2022-33740)

It was discovered that the Xen paravirtualization frontend in the Linux
kernel incorrectly shared unrelated data when communicating with certain
backends. A local attacker could use this to cause a denial of service
(guest crash) or expose sensitive information (guest kernel memory).
(CVE-2022-33741, CVE-2022-33742)

Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in
the Linux kernel on ARM platforms contained a race condition in certain
situations. An attacker in a guest VM could use this to cause a denial of
service in the host OS. (CVE-2022-33744)

Update instructions:

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1054-dell300x  4.15.0-1054.59
   linux-image-4.15.0-1107-oracle  4.15.0-1107.118
   linux-image-4.15.0-1120-raspi2  4.15.0-1120.128
   linux-image-4.15.0-1128-kvm     4.15.0-1128.133
   linux-image-4.15.0-1138-snapdragon  4.15.0-1138.148
   linux-image-4.15.0-194-generic  4.15.0-194.205
   linux-image-4.15.0-194-generic-lpae  4.15.0-194.205
   linux-image-4.15.0-194-lowlatency  4.15.0-194.205
   linux-image-dell300x            4.15.0.1054.54
   linux-image-generic             4.15.0.194.179
   linux-image-generic-lpae        4.15.0.194.179
   linux-image-kvm                 4.15.0.1128.121
   linux-image-lowlatency          4.15.0.194.179
   linux-image-oracle-lts-18.04    4.15.0.1107.114
   linux-image-raspi2              4.15.0.1120.117
   linux-image-snapdragon          4.15.0.1138.139
   linux-image-virtual             4.15.0.194.179

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-5669-1
   CVE-2022-0812, CVE-2022-1012, CVE-2022-2318, CVE-2022-26365,
   CVE-2022-32296, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742,
   CVE-2022-33744

Package Information:
   https://launchpad.net/ubuntu/+source/linux/4.15.0-194.205
   https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1054.59
   https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1128.133
   https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1107.118
   https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1120.128
   https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1138.148

Ubuntu 5669-1: Linux kernel vulnerabilities

October 10, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-dell300x: Linux kernel for Dell 300x platforms - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi systems - linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors Details: It was discovered that the SUNRPC RDMA protocol implementation in the Linux kernel did not properly calculate the header size of a RPC message payload. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0812) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365) Roger Pau Monné discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-33740) It was discovered that the Xen paravirtualization frontend in the Linux kernel incorrectly shared unrelated data when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741, CVE-2022-33742) Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in the Linux kernel on ARM platforms contained a race condition in certain situations. An attacker in a guest VM could use this to cause a denial of service in the host OS. (CVE-2022-33744)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1054-dell300x 4.15.0-1054.59 linux-image-4.15.0-1107-oracle 4.15.0-1107.118 linux-image-4.15.0-1120-raspi2 4.15.0-1120.128 linux-image-4.15.0-1128-kvm 4.15.0-1128.133 linux-image-4.15.0-1138-snapdragon 4.15.0-1138.148 linux-image-4.15.0-194-generic 4.15.0-194.205 linux-image-4.15.0-194-generic-lpae 4.15.0-194.205 linux-image-4.15.0-194-lowlatency 4.15.0-194.205 linux-image-dell300x 4.15.0.1054.54 linux-image-generic 4.15.0.194.179 linux-image-generic-lpae 4.15.0.194.179 linux-image-kvm 4.15.0.1128.121 linux-image-lowlatency 4.15.0.194.179 linux-image-oracle-lts-18.04 4.15.0.1107.114 linux-image-raspi2 4.15.0.1120.117 linux-image-snapdragon 4.15.0.1138.139 linux-image-virtual 4.15.0.194.179 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-5669-1

CVE-2022-0812, CVE-2022-1012, CVE-2022-2318, CVE-2022-26365,

CVE-2022-32296, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742,

CVE-2022-33744

Severity
Ubuntu Security Notice USN-5669-1

Package Information

https://launchpad.net/ubuntu/+source/linux/4.15.0-194.205 https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1054.59 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1128.133 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1107.118 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1120.128 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1138.148

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