==========================================================================
Ubuntu Security Notice USN-5616-1
September 16, 2022

linux-intel-iotg vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-intel-iotg: Linux kernel for Intel IoT platforms

Details:

Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe)
Ethernet driver for the Linux kernel performed insufficient control flow
management. A local attacker could possibly use this to cause a denial 
of service. (CVE-2021-33061)

Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP 
implementation in the Linux kernel did notprovide sufficient 
randomization when calculating port offsets. An attacker could possibly 
use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296)

Norbert Slusarek discovered that a race condition existed in the perf
subsystem in the Linux kernel, resulting in a use-after-free 
vulnerability. A privileged local attacker could use this to cause a 
denial of service (system crash) or possibly execute arbitrary code. 
(CVE-2022-1729)

Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered that the KVM 
hypervisor implementation in the Linux kernel did not properly handle an 
illegal instruction in a guest, resulting in a null pointer dereference. 
An attacker in a guest VM could use this to cause a denial of service 
(system crash) in the host OS. (CVE-2022-1852)

It was discovered that the UDF file system implementation in the Linux
kernel contained 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-2022-1943)

Gerald Lee discovered that the NTFS file system 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 expose sensitive 
information. (CVE-2022-1973)

It was discovered that the device-mapper verity (dm-verity) driver in 
the Linux kernel did not properly verify targets being loaded into the 
device-mapper table. A privileged attacker could use this to cause a 
denial of service (system crash) or possibly execute arbitrary code. 
(CVE-2022-2503)

Zheyu Ma discovered that the Intel iSMT SMBus host controller driver in 
the Linux kernel contained an out-of-bounds write vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-2873)

Selim Enes Karaduman discovered that a race condition existed in the 
pipe buffers implementation of the Linux kernel. A local attacker could 
use this to cause a denial of service (system crash) or possibly 
escalate privileges. (CVE-2022-2959)

Update instructions:

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1015-intel-iotg  5.15.0-1015.20
   linux-image-intel-iotg          5.15.0.1015.16

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-5616-1
   CVE-2021-33061, CVE-2022-1012, CVE-2022-1729, CVE-2022-1852,
   CVE-2022-1943, CVE-2022-1973, CVE-2022-2503, CVE-2022-2873,
   CVE-2022-2959, CVE-2022-32296

Package Information:
   https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1015.20